You control a creature that can tap to produce at least .

Activate the mana-producing creature by tapping it, adding at least .
Activate Phelddagrif's first ability by paying , causing Phelddagrif to gain trample until end of turn and causing target opponent to create a 11 Hippo creature token.
The Hippo enters the battlefield, triggering Intruder Alarm and Suture Priest's second ability.
Resolve the Intruder Alarm trigger, untapping all creatures.
Resolve the Suture Priest trigger, causing the Hippo token's controller to lose 1 life.
Repeat.

Activate Mite Overseer by paying , creating two 1/1 Phyrexian Mite artifact creature tokens.
The Phyrexian Mites enter the battlefield, triggering Suture Priest's first ability twice, causing you to gain two life.
Activate Ashnod's Altar twice by sacrificing the Phyrexian Mites, adding .
Repeat.

You control a creature that can tap to produce at least .

Activate the mana-producing creature by tapping it, adding at least .
Activate Questing Phelddagrif's first ability by paying , giving it +1/+1 until end of turn and causing target opponent to create a 11 Hippo creature token.
The Hippo enters the battlefield, triggering Intruder Alarm and Suture Priest's second ability.
Resolve the Intruder Alarm trigger, untapping all creatures.
Resolve the Suture Priest trigger, causing the Hippo token's controller to lose 1 life.
Repeat.

Gain life.
Cleric Class triggers, putting a +1/+1 counter on Scurry Oak.
Scurry Oak triggers, creating a creature token.
When the creature token enters the battlefield, Suture Priest triggers, causing you to gain 2 life.
Repeat from step 2.

Gain life.
Heliod triggers, putting a +1/+1 counter on Scurry Oak.
Scurry Oak triggers, creating a creature token.
When the creature token enters the battlefield, Suture Priest triggers, causing you to gain 1 life.
Repeat from step 2.

Activate Mite Overseer by paying , creating two 1/1 Phyrexian Mite artifact creature tokens.
When the Phyrexian Mites enter the battlefield, Suture Priest triggers twice, causing you to gain 2 life.
Activate Ashnod's Altar twice by sacrificing the Phyrexian Mites, adding .
Repeat.

Once you have infinite mana, you may forego sacrificing the Phyrexian Mites.

You have a way to gain life.

Gain any amount of life.
Treebeard's second ability triggers, putting that many +1/+1 counters on Scurry Oak.
Scurry Oak triggers, creating a 1/1 Squirrel creature token.
When the Squirrel enters the battlefield, Suture Priest's first ability triggers, causing you to gain 1 life.
Repeat from step 2.

Gain life.
Archangel of Thune triggers, putting a +1/+1 counter on each creature you control.
Scurry Oak triggers, creating a creature token.
When the creature token enters the battlefield, Suture Priest triggers, causing you to gain 1 life.
Repeat from step 2.

Activate Warren Soultrader by paying 1 life and sacrificing Gravecrawler, creating a Treasure token.
Activate the Treasure by tapping and sacrificing it, adding .
Cast Gravecrawler from your graveyard by paying .
When Gravecrawler enters, Suture Priest triggers, causing you to gain 1 life.
Repeat.

Gain life.
Cleric Class triggers, putting a +1/+1 counter on Herd Baloth.
Herd Baloth triggers, creating a creature token.
When the creature token enters the battlefield, Suture Priest triggers, causing you to gain 2 life.
Repeat from step 2.

Gain life.
Heliod triggers, putting a +1/+1 counter on Herd Baloth.
Herd Baloth triggers, creating a creature token.
When the creature token enters the battlefield, Suture Priest triggers, causing you to gain 1 life.
Repeat from step 2.

Gain life.
Light of Promise triggers, putting a +1/+1 counter on Scurry Oak.
Scurry Oak triggers, creating a creature token.
When the creature token enters the battlefield, Suture Priest triggers, causing you to gain 1 life.
Repeat from step 2.

Activate Mite Overseer by paying , creating two 1/1 Phyrexian Mite artifact creature tokens.
The Phyrexian Mites enter the battlefield, triggering Suture Priest's first ability twice, causing you to gain two life.
Activate Krark-Clan Ironworks twice by sacrificing the Phyrexian Mites, adding .
Repeat.

Gain life.
Cleric Class triggers, putting a +1/+1 counter on Basking Broodscale.
Basking Broodscale triggers, creating a creature token.
When the creature token enters the battlefield, Suture Priest triggers, causing you to gain 2 life.
Repeat from step 2.

Gain life.
Heliod triggers, putting a +1/+1 counter on Basking Broodscale.
Basking Broodscale triggers, creating a creature token.
When the creature token enters the battlefield, Suture Priest triggers, causing you to gain 1 life.
Repeat from step 2.

Gain life.
Archangel of Thune triggers, putting a +1/+1 counter on each creature you control.
Herd Baloth triggers, creating a creature token.
When the creature token enters the battlefield, Suture Priest triggers, causing you to gain 1 life.
Repeat from step 2.

Gain life.
Light of Promise triggers, putting a +1/+1 counter on Herd Baloth.
Herd Baloth triggers, creating a creature token.
When the creature token enters the battlefield, Suture Priest triggers, causing you to gain 1 life.
Repeat from step 2.

You have a way to put a +1/+1 counter on Basking Broodscale.

Put a +1/+1 counter on Basking Broodscale.
Basking Broodscale triggers, creating a 0/1 Eldrazi Spawn creature token.
When the Eldrazi Spawn enters the battlefield, Suture Priest's first ability triggers, causing you to gain 1 life.
Archangel of Thune triggers, putting a +1/+1 counter on each creature you control.
Repeat from step 2.

Activate Mite Overseer by paying , creating two 1/1 Phyrexian Mite artifact creature tokens.
When the Phyrexian Mites enter the battlefield, Suture Priest triggers twice, causing you to gain 2 life.
Activate Krark-Clan Ironworks twice by sacrificing the Phyrexian Mites, adding .
Repeat.

Once you have infinite mana, you may forego sacrificing the Phyrexian Mites.

Gain life.
Sunbond triggers, putting a +1/+1 counter on Scurry Oak.
Scurry Oak triggers, creating a creature token.
When the creature token enters the battlefield, Suture Priest triggers, causing you to gain 1 life.
Repeat from step 2.

Activate Mite Overseer by paying , creating two 1/1 Phyrexian Mite artifact creature tokens.
When the Phyrexian Mites enter the battlefield, Suture Priest triggers twice, causing you to gain 2 life.
Activate Ashnod's Altar twice by sacrificing the Phyrexian Mites, adding .
Repeat.

Once you have infinite mana, you may forego sacrificing the Phyrexian Mites.

Famished Paladin does not have summoning sickness.
Presence of Gond attached to Famished Paladin.

Tap Famished Paladin to create a 1/1 creature token.
The token ETBs, triggering Suture Priest and gaining you 1 life.
Famished Paladin triggers, untapping itself.
Repeat for infinite creature tokens.

Gain life.
Sunbond triggers, putting a +1/+1 counter on Herd Baloth.
Herd Baloth triggers, creating a creature token.
When the creature token enters the battlefield, Suture Priest triggers, causing you to gain 1 life.
Repeat from step 2.

Presence of Gond attached to Lurking Roper.
Lurking Roper does not have summoning sickness.

Activate Lurking Roper by tapping it, creating a 1/1 Elf Warrior creature token.
When the Elf Warrior enters the battlefield, Suture Priest's first ability triggers, causing you to gain 1 life.
Lurking Roper triggers, untapping itself.
Repeat.

You have a way to gain life.

Gain life.
Heliod triggers, putting a +1/+1 counter on a creature you control.
Animation Module triggers, causing you to pay to create a 1/1 Servo artifact creature token.
When the Servo enters the battlefield, Suture Priest triggers, causing you to gain 1 life.
Heliod triggers, holding priority, activate Ashnod's Altar by sacrificing the Servo, adding .
Resolve the Heliod trigger, putting a +1/+1 counter on a creature you control.
Repeat from step 3.

Gain life.
Basking Broodscale triggers, putting a +1/+1 counter on itself.
Basking Broodscale triggers, creating a creature token.
When the creature token enters the battlefield, Suture Priest triggers, causing you to gain 1 life.
Repeat from step 2.

Gain any amount of life.
Trudge Garden triggers, causing you to pay to create a 4/4 Fungus Beast creature token.
When the Fungus Beast enters the battlefield, Suture Priest triggers.
Holding priority, activate Ashnod's Altar by sacrificing the Fungus Beast, adding .
Resolve the Suture Priest trigger, causing you to gain life.
Repeat from step 2.

You control at least one additional creature.
Your life total is at least 2.

Activate Warren Soultrader by paying 1 life and sacrificing another creature, creating a Treasure token and a 1/1 Squirrel creature token.
When the Squirrel enters the battlefield, Suture Priest's first ability triggers, causing you to gain 1 life.
Repeat.

Cast Whitemane Lion by paying .
Defiler of Faith triggers, creating a 1/1 Soldier creature token.
When the Soldier enters the battlefield, Suture Priest's first ability triggers, causing you to gain one life.
When Whitemane Lion enters the battlefield, it and Suture Priest's first ability trigger.
Resolve the Suture Priest trigger, causing you to gain one life.
Resolve the Whitemane Lion trigger, returning it from the battlefield to your hand.
Activate Ashnod's Altar by sacrificing the Soldier, adding .
Repeat.

Gain life.
Basking Broodscale triggers, putting a +1/+1 counter on itself.
Basking Broodscale triggers, creating a creature token.
When the creature token enters the battlefield, Suture Priest triggers, causing you to gain 1 life.
Repeat from step 2.

You control at least one additional creature.
Your life total is at least 2.

Activate Warren Soultrader by paying 1 life and sacrificing another creature, creating a Treasure token and a 1/1 Thopter artifact creature token.
When the Thopter enters the battlefield, Suture Priest triggers, causing you to gain 1 life.
Repeat.

You have a way to give Suture Priest indestructible.

Gain life.
Amalia triggers, revealing the top card of your library and then putting a +1/+1 counter on Amalia, putting the card back on top of your library, and destroying all other creatures if Amalia's power is 20.
Animation Module triggers, causing you to pay to create a 1/1 Servo artifact creature token.
When the Servo enters the battlefield, Suture Priest triggers, causing you to gain 1 life.
Amalia triggers. Holding priority, activate Ashnod's Altar by sacrificing the Servo, adding .
Resolve the Amalia trigger, revealing the top card of your library and then putting a +1/+1 counter on Amalia, putting the card back on top of your library, and destroying all other creatures if Amalia's power is 20.
Repeat from step 3.

You control at least two additional creatures.
Scurry Oak has no +1/+1 counters on it.
Your life total is at least 2.

Cast Yawgmoth by paying .
When Yawgmoth enters the battlefield, Suture Priest's first ability and Scurry Oak's evolve ability trigger.
Holding priority, activate Yawgmoth by paying 1 life and sacrificing a creature, putting a -1/-1 counter on Scurry Oak and causing you to draw a card.
Resolve the Suture Priest trigger, causing you to gain 1 life.
Resolve the Scurry Oak trigger, putting a +1/+1 counter on it, triggering Scurry Oak's second ability.
Holding priority, activate Yawgmoth by paying 1 life and sacrificing a creature, putting a -1/-1 counter on Scurry Oak and causing you to draw a card.
Resolve the Scurry Oak trigger, creating a 1/1 Squirrel creature token.
When the Squirrel enters the battlefield, Suture Priest's first ability and Scurry Oak's evolve ability trigger.
Repeat from step 3.

You have a way to gain life.

Gain life.
Heliod triggers, putting a +1/+1 counter on a creature you control.
Animation Module triggers, causing you to pay to create a 1/1 Servo artifact creature token.
When the Servo enters the battlefield, Suture Priest triggers, causing you to gain 1 life.
Heliod triggers, holding priority, activate Phyrexian Altar by sacrificing the Servo, adding .
Resolve the Heliod trigger, putting a +1/+1 counter on a creature you control.
Repeat from step 3.

Rescue Racer.
Ratchet is your commander.
You have gained at least 2 life this turn.

Cast Sculpting Steel by paying , causing it to enter the battlefield as a copy of Ratchet, Rescue Racer.
Put Ratchet into your graveyard due to the legend rule.
Choose to return Ratchet to the command zone from your graveyard.
Sculpting Steel triggers, failing to convert it.
Cast Ratchet from the command zone as Ratchet, Field Medic by paying plus commander tax, if applicable.
When Ratchet, Field Medic enters the battlefield, Suture Priest's first ability triggers, causing you to gain one life.
Ratchet, Field Medic triggers, converting itself.
Put Ratchet into your graveyard due to the legend rule.
Choose not to return Ratchet to the command zone from your graveyard.
Ratchet, Field Medic triggers, returning itself from your graveyard to the battlefield.
Repeat from step 6.

Cast Kor Skyfisher by paying .
Defiler of Faith triggers, creating a 1/1 Soldier creature token.
When the Soldier enters the battlefield, Suture Priest's first ability triggers, causing you to gain one life.
When Kor Skyfisher enters the battlefield, it and Suture Priest's first ability trigger.
Resolve the Suture Priest trigger, causing you to gain one life.
Resolve the Kor Skyfisher trigger, returning it from the battlefield to your hand.
Activate Ashnod's Altar by sacrificing the Soldier, adding .
Repeat.

Activate Mite Overseer by paying , creating two 1/1 Phyrexian Mite artifact creature tokens.
When the Phyrexian Mites enter the battlefield, Suture Priest triggers twice, causing you to gain 2 life.
Activate Ashnod's Altar twice by sacrificing the Phyrexian Mites, adding .
Repeat.

Once you have infinite mana, you may forego sacrificing the Phyrexian Mites.

You have a creature card in hand that can be cast using one colored mana with the mana to cast it.

Cast the creature by paying its mana cost.
When the creature enters the battlefield, Suture Priest triggers, causing you to gain 1 life.
Activate Warren Soultrader by paying 1 life and sacrificing the creature.
When the creature dies, Enduring Renewal triggers, returning the creature from your graveyard to your hand.
Resolve the Warren Soultrader ability, creating a Treasure token.
Activate the Treasure by tapping and sacrificing it, adding one mana of any color.
Repeat.

Activate Mite Overseer by paying , creating two 1/1 Phyrexian Mite artifact creature tokens.
When the Phyrexian Mites enter the battlefield, Suture Priest triggers twice, causing you to gain 2 life.
Activate Krark-Clan Ironworks twice by sacrificing the Phyrexian Mites, adding .
Repeat.

Once you have infinite mana, you may forego sacrificing the Phyrexian Mites.

Famished Paladin does not have summoning sickness.
Splinter Twin attached to Famished Paladin.

Tap Famished Paladin to create a token copy of it with haste.
The token ETBs, triggering Suture Priest and gaining you 1 life.
All of your Famished Paladins trigger, untapping themselves.
Repeat for infinite creature tokens with haste.

Activate Mite Overseer by paying , creating two 1/1 Phyrexian Mite artifact creature tokens.
When the Phyrexian Mites enter the battlefield, Suture Priest triggers twice, causing you to gain 2 life.
Activate Ashnod's Altar twice by sacrificing the Phyrexian Mites, adding .
Repeat.

Once you have infinite mana, you may forego sacrificing the Phyrexian Mites.

You have at least three opponents.

Activate Eldrazi Displacer by paying , blinking Rasputin.
Rasputin enters the battlefield, triggering itself, Amulet of Vigor, and Suture Priest's first ability.
Resolve the Suture Priest trigger, causing you to gain 1 life.
Resolve the Amulet of Vigor ability, untapping Rasputin.
Resolve the Rasputin trigger, putting at least three dream counters on itself and causing each opponent to create a 1/1 Goblin creature token.
The Goblins enter the battlefield, triggering Suture Priest's second ability three times.
Holding priority, activate Rasputin's first ability by tapping it and removing three dream counters from it, adding .
Repeat.
Resolve all Suture Priest triggers, causing each opponent to lose infinite life.

Famished Paladin does not have summoning sickness.
Elemental Mastery attached to Famished Paladin.

Tap Famished Paladin to create 3 1/1 creature tokens with haste.
The token ETBs, triggering Suture Priest three times, gaining you 1 life each time.
Famished Paladin triggers, untapping itself.
Repeat for infinite creature tokens.

Cast Basking Broodscale by paying .
When Basking Broodscale enters the battlefield, Suture Priest triggers, causing you to gain 1 life.
Lisette triggers, causing you to pay to put a +1/+1 counter on each creature you control.
Basking Broodscale triggers, creating a 0/1 Eldrazi Spawn creature token.
When the Eldrazi Spawn enters the battlefield, Suture Priest triggers.
Holding priority, activate the Eldrazi Spawn by sacrificing it, adding .
Resolve the Suture Priest trigger, causing you to gain 1 life.
Repeat from step 3.

Activate Mite Overseer by paying , creating two 1/1 Phyrexian Mite artifact creature tokens.
When the Phyrexian Mites enter the battlefield, Suture Priest triggers twice, causing you to gain 2 life.
Activate Ashnod's Altar twice by sacrificing the Phyrexian Mites, adding .
Repeat.

Once you have infinite mana, you may forego sacrificing the Phyrexian Mites.

You have a way to draw a card.

Draw a card.
Nadir Kraken triggers, causing you to pay to put a +1/+1 counter on it and create a 1/1 Tentacle creature token.
When the Tentacle enters the battlefield, Suture Priest's first ability triggers, causing you to gain 1 life.
Oloro's second ability triggers.
Holding prioirty, activate Ashnod's Altar by sacrificing the Tentacle, adding .
Resolve the Oloro trigger, causing you to pay to draw a card and cause each opponent to lose 1 life.
Repeat.

Cast Storm Herd by paying .
Hive Mind triggers, causing each opponent to copy Storm Herd.
Resolve the first opponent's Storm Herd, causing them to create a number of 1/1 Pegasus creature tokens equal to their life total.
Each Pegasus enters the battlefield, triggering Suture Priest's second ability that many times, causing the opponent to lose life equal to the number of Pegasus that entered the battlefield.
The opponent loses the game due to having zero or less life.
Repeat from step 3 for each remaining Storm Herd.

Lurking Roper does not have summoning sickness.
Elemental Mastery attached to Lurking Roper.

Activate Lurking Roper by tapping it, creating four 1/1 Elemental creature tokens.
When the Elementals enter the battlefield, they trigger Suture Priest's first ability four times.
Resolve the first Suture Priest trigger, causing you to gain one life.
Lurking Roper triggers, untapping itself.
Repeat.

You have a way to give Suture Priest indestructible.

Gain life.
Amalia triggers, revealing the top card of your library and then putting a +1/+1 counter on Amalia, putting the card back on top of your library, and destroying all other creatures if Amalia's power is 20.
Animation Module triggers, causing you to pay to create a 1/1 Servo artifact creature token.
When the Servo enters the battlefield, Suture Priest triggers, causing you to gain 1 life.
Amalia triggers. Holding priority, activate Phyrexian Altar by sacrificing the Servo, adding one mana of any color.
Resolve the Amalia trigger, revealing the top card of your library and then putting a +1/+1 counter on Amalia, putting the card back on top of your library, and destroying all other creatures if Amalia's power is 20.
Repeat from step 3.

Declare Phyrexian Vindicator as an attacker.
Holding priority, activate Catapult Squad by tapping two Soldiers, attempting to deal 2 damage to Phyrexian Vindicator.
The damage is prevented due to Phyrexian Vindicator's replacement effect. Phyrexian Vindicator triggers, dealing 2 damage to you.
Darien triggers, creating two 1/1 Soldier creature tokens.
When the Soldiers enter the battlefield, Suture Priest triggers twice, causing you to gain 2 life.
Repeat from step 2.

You have at least three opponents.

Activate Eldrazi Displacer by paying , blinking Rasputin.
Rasputin enters the battlefield, triggering itself, Amulet of Vigor, and Suture Priest's first ability.
Resolve the Suture Priest trigger, causing you to gain 1 life.
Resolve the Amulet of Vigor ability, untapping Rasputin.
Resolve the Rasputin trigger, putting at least three dream counters on itself and causing each opponent to create a 1/1 Goblin creature token.
The Goblins enter the battlefield, triggering Suture Priest's second ability three times.
Holding priority, activate Rasputin's first ability by tapping it and removing three dream counters from it, adding .
Repeat.
Resolve all Suture Priest triggers, causing each opponent to lose infinite life.

Lurking Roper does not have summoning sickness.
Splinter Twin attached to Lurking Roper.

Activate Lurking Roper by tapping it, creating a token copy of itself.
When the Lurking Roper token enters the battlefield, Suture Priest's first ability triggers, causing you to gain 1 life.
Each Lurking Roper you control triggers, untapping themselves.
Repeat.

You have a way to gain life.

Gain life.
Heliod triggers, putting a +1/+1 counter on a creature you control.
Animation Module triggers, causing you to pay to create a 1/1 Servo artifact creature token.
When the Servo enters the battlefield, Suture Priest triggers, causing you to gain 1 life.
Heliod triggers, holding priority, activate Krark-Clan Ironworks by sacrificing the Servo, adding .
Resolve the Heliod trigger, putting a +1/+1 counter on a creature you control.
Repeat from step 3.

Gain life.
Spider-Man triggers, putting a +1/+1 counter on Basking Broodscale.
Basking Broodscale triggers, creating a creature token.
When the creature token enters the battlefield, Suture Priest triggers, causing you to gain 1 life.
Repeat from step 2.

Activate Mite Overseer by paying , creating two 1/1 Phyrexian Mite artifact creature tokens.
When the Phyrexian Mites enter the battlefield, Suture Priest triggers twice, causing you to gain 2 life.
Activate Ashnod's Altar twice by sacrificing the Phyrexian Mites, adding .
Repeat.

Once you have infinite mana, you may forego sacrificing the Phyrexian Mites.

Activate Mite Overseer by paying , creating two 1/1 Phyrexian Mite artifact creature tokens.
When the Phyrexian Mites enter the battlefield, Suture Priest triggers twice, causing you to gain 2 life.
Activate Krark-Clan Ironworks twice by sacrificing the Phyrexian Mites, adding .
Repeat.

Once you have infinite mana, you may forego sacrificing the Phyrexian Mites.

Your life total is at least 4.

Activate Phyrexian Altar twice by sacrificing the Wurm tokens, adding .
Activate Chainer by paying and 3 life, putting Wurmcoil Engine from your graveyard onto the battlefield.
When Wurmcoil Engine enters the battlefield, Suture Priest triggers, causing you to gain 1 life.
Activate Phyrexian Altar by sacrificing Wurmcoil Engine, adding .
When Wurmcoil Engine dies, it triggers, creating two 3/3 Wurm artifact creature tokens.
When the Wurms enter the battlefield, Suture Priest triggers twice, causing you to gain 2 life.
Activate Phyrexian Altar twice by sacrificing the Wurms, adding .
Repeat.

Activate Mite Overseer by paying , creating two 1/1 Phyrexian Mite artifact creature tokens.
When the Phyrexian Mites enter the battlefield, Suture Priest triggers twice, causing you to gain 2 life.
Activate Krark-Clan Ironworks twice by sacrificing the Phyrexian Mites, adding .
Repeat.

Once you have infinite mana, you may forego sacrificing the Phyrexian Mites.

Gain life.
Spider-Man triggers, putting a +1/+1 counter on Scurry Oak.
Scurry Oak triggers, creating a creature token.
When the creature token enters the battlefield, Suture Priest triggers, causing you to gain 1 life.
Repeat from step 2.

Gain life.
Spider-Man triggers, putting a +1/+1 counter on Herd Baloth.
Herd Baloth triggers, creating a creature token.
When the creature token enters the battlefield, Suture Priest triggers, causing you to gain 1 life.
Repeat from step 2.

You have a way to give Suture Priest indestructible.

Gain life.
Amalia triggers, revealing the top card of your library and then putting a +1/+1 counter on Amalia, putting the card back on top of your library, and destroying all other creatures if Amalia's power is 20.
Animation Module triggers, causing you to pay to create a 1/1 Servo artifact creature token.
When the Servo enters the battlefield, Suture Priest triggers, causing you to gain 1 life.
Amalia triggers. Holding priority, activate Krark-Clan Ironworks by sacrificing the Servo, adding .
Resolve the Amalia trigger, revealing the top card of your library and then putting a +1/+1 counter on Amalia, putting the card back on top of your library, and destroying all other creatures if Amalia's power is 20.
Repeat from step 3.

Activate Mite Overseer by paying , creating two 1/1 Phyrexian Mite artifact creature tokens.
When the Phyrexian Mites enter the battlefield, Suture Priest triggers twice, causing you to gain 2 life.
Activate Krark-Clan Ironworks twice by sacrificing the Phyrexian Mites, adding .
Repeat.

Once you have infinite mana, you may forego sacrificing the Phyrexian Mites.

You have at least three opponents.

Activate Emiel by paying , blinking Rasputin.
Rasputin enters the battlefield, triggering itself and Suture Priest's first ability.
Resolve the Suture Priest trigger, causing you to gain 1 life.
Resolve the Rasputin trigger, putting at least three dream counters on itself and causing each opponent to create a 1/1 Goblin creature token.
The Goblins enter the battlefield, triggering Suture Priest's second ability three times.
Holding priority, activate Rasputin's first ability by tapping it and removing three dream counters from it, adding .
Repeat.
Resolve all Suture Priest triggers, causing each opponent to lose infinite life.

Cast Gravecrawler either from your hand or graveyard by paying .
When Gravecrawler enters the battlefield, Suture Priest, Carnival of Souls and The Sibsig Ceremony trigger.
Resolve the Suture Priest trigger, causing you to gain 1 life.
Resolve the Carnival of Souls trigger, causing you to lose 1 life and add .
Resolve the Sibsig Ceremony trigger, destroying Gravecrawler and creating a 2/2 Zombie Druid creature token.
When the Zombie Druid enters the battlefield, Suture Priest and Carnival of Souls trigger.
Resolve the Suture Priest trigger, causing you to gain 1 life.
Resolve the Carnival of Souls trigger, causing you to lose 1 life and add .
Repeat.

You have a way to gain life.

Gain life.
Heliod triggers, putting a +1/+1 counter on a creature you control.
Animation Module triggers, causing you to pay to create a 1/1 Servo artifact creature token.
When the Servo enters the battlefield, Suture Priest triggers, causing you to gain 1 life.
Heliod triggers, holding priority, activate Thermopod by sacrificing the Servo, adding .
Resolve the Heliod trigger, putting a +1/+1 counter on a creature you control.
Repeat from step 3.

Activate Mite Overseer by paying , creating two 1/1 Phyrexian Mite artifact creature tokens.
When the Phyrexian Mites enter the battlefield, Suture Priest triggers twice, causing you to gain 2 life.
Activate Krark-Clan Ironworks twice by sacrificing the Phyrexian Mites, adding .
Repeat.

Once you have infinite mana, you may forego sacrificing the Phyrexian Mites.

Famished Paladin has at least one +1/+1 counter on it and does not have summoning sickness.

Activate Famished Paladin using Kiki-Jiki's ability by tapping it, creating a token copy of itself with haste.
When the Famished Paladin token enters the battlefield, Suture Priest's first ability triggers, causing you to gain 1 life.
Each Famished Paladin you control triggers, untapping themselves.
Repeat.
You may also target any nonlegendary creature you control.

You have a way to give Suture Priest indestructible.

Gain life.
Amalia triggers, revealing the top card of your library and then putting a +1/+1 counter on Amalia, putting the card back on top of your library, and destroying all other creatures if Amalia's power is 20.
Animation Module triggers, causing you to pay to create a 1/1 Servo artifact creature token.
When the Servo enters the battlefield, Suture Priest triggers, causing you to gain 1 life.
Amalia triggers. Holding priority, activate Thermopod by sacrificing the Servo, adding .
Resolve the Amalia trigger, revealing the top card of your library and then putting a +1/+1 counter on Amalia, putting the card back on top of your library, and destroying all other creatures if Amalia's power is 20.
Repeat from step 3.

You have a way to draw a card.

Draw a card.
The Locust God triggers, creating a 1/1 Insect creature token with flying and haste.
When the Insect enters the battlefield, Suture Priest triggers, causing you to gain 1 life.
Well of Lost Dreams triggers. Holding priority, activate Thermopod by sacrificing the Insect, adding .
Resolve the Well of Lost Dreams trigger, causing you to pay to draw a card.
Repeat from step 2.

You have a way to draw a card.

Draw a card.
The Locust God triggers, creating a 1/1 Insect creature token with flying and haste.
When the Insect enters the battlefield, Suture Priest triggers, causing you to gain 1 life.
Well of Lost Dreams triggers. Holding priority, activate Phyrexian Altar by sacrificing the Insect, adding .
Resolve the Well of Lost Dreams trigger, causing you to pay to draw a card.
Repeat from step 2.

You have a way to draw a card.

Draw a card.
The Locust God triggers, creating a 1/1 Insect creature token with flying and haste.
When the Insect enters the battlefield, Suture Priest triggers, causing you to gain 1 life.
Well of Lost Dreams triggers. Holding priority, activate Ashnod's Altar by sacrificing the Insect, adding .
Resolve the Well of Lost Dreams trigger, causing you to pay to draw a card.
Repeat from step 2.

Activate Mite Overseer by paying , creating two 1/1 Phyrexian Mite artifact creature tokens.
When the Phyrexian Mites enter the battlefield, Suture Priest triggers twice, causing you to gain 2 life.
Activate Krark-Clan Ironworks twice by sacrificing the Phyrexian Mites, adding .
Repeat.

Once you have infinite mana, you may forego sacrificing the Phyrexian Mites.

Activate Mite Overseer by paying , creating two 1/1 Phyrexian Mite artifact creature tokens.
When the Phyrexian Mites enter the battlefield, Suture Priest triggers twice, causing you to gain 2 life.
Activate Ashnod's Altar twice by sacrificing the Phyrexian Mites, adding .
Repeat.

Once you have infinite mana, you may forego sacrificing the Phyrexian Mites.

Lurking Roper has at least one +1/+1 counter on it and does not have summoning sickness.

Activate Lurking Roper using Kiki-Jiki's ability by tapping it, creating a token copy of itself with haste.
When the Lurking Roper token enters the battlefield, Suture Priest's first ability triggers, causing you to gain 1 life.
Each Lurking Roper you control triggers, untapping themselves.
Repeat.
You may also target any nonlegendary creature you control.

You have at least three opponents.

Activate Emiel by paying , blinking Rasputin.
Rasputin enters the battlefield, triggering itself and Suture Priest's first ability.
Resolve the Suture Priest trigger, causing you to gain 1 life.
Resolve the Rasputin trigger, putting at least three dream counters on itself and causing each opponent to create a 1/1 Goblin creature token.
The Goblins enter the battlefield, triggering Suture Priest's second ability three times.
Holding priority, activate Rasputin's first ability by tapping it and removing three dream counters from it, adding .
Repeat.
Resolve all Suture Priest triggers, causing each opponent to lose infinite life.

Activate Warren Soultrader by paying 1 life and sacrificing Reveillark.
When Reveillark dies, it triggers, returning Seedship Broodtender and Boss's Chauffeur from your graveyard to the battlefield. Boss's Chauffeur will enter with a +1/+1 counter on it equal to the number of creatures you control.
When Seedship Broodtender enters, it, Suture Priest and Boss's Chauffeur trigger.
Resolve the Suture Priest trigger, causing you to gain 1 life.
Resolve the Boss's Chauffeur trigger, putting a +1/+1 counter on Boss's Chauffeur.
Resolve the Seedship Broodtender trigger, causing you to mill three cards.
Resolve the Warren Soultrader ability, creating a Treasure token.
Activate Warren Soultrader by paying 1 life and sacrificing Boss's Chauffeur.
When Boss's Chauffeur dies, it triggers, creating a 1/1 Citizen creature token for each +1/+1 counter on it.
When the Citizens enter, Suture Priest triggers that many times, causing you to gain that much life.
Resolve the Warren Soultrader ability, creating a Treasure token.
Activate Warren Soultrader by paying 1 life and sacrificing a Citizen, creating a Treasure token.
Repeat step 12 two additional times.
Activate five Treasures by tapping and sacrificing them, adding .
Activate Seedship Broodtender by paying and sacrificing it, returning Reveillark from your graveyard to the battlefield.
When Reveillark enters, Suture Priest triggers, causing you to gain 1 life.
Repeat.

You must control an additional creature to get infinite +1/+1 counters on Boss's Chauffeur, infinite mana, infinite lifegain, and infinite creature tokens.

Activate Havengul Lich by paying , allowing you to cast a Zombie from your graveyard this turn.
Cast the Zombie from your graveyard by paying due to Rooftop Storm.
When the Zombie enters the battlefield, Suture Priest triggers, causing you to gain 1 life.
Activate Warren Soultrader by paying 1 life and sacrificing the Zombie, creating a Treasure token.
Activate the Treasure by tapping and sacrificing it, adding .
Repeat.