You control a nontoken creature other than Quirion Ranger that does not have summoning sickness.

Activate any nontoken creature you control except Quirion Ranger by tapping it, adding .
Activate Quirion Ranger by returning itself from the battlefield to your hand, untapping the creature tapped for mana.
Cast Quirion Ranger by paying .
Repeat.

Cast Peer into the Abyss by paying , causing target opponent to draw cards equal to half their deck size, rounded up, and lose at least their entire life total due to Bloodletter of Aclazotz.
The opponent loses the game due to having 0 or less life.

You have a way to deal noncombat damage to an opponent who controls at least one creature.

Deal noncombat damage to an opponent.
Chandra's Incinerator triggers, dealing that much damage to a creature the opponent controls.
Repercussion triggers, causing the creature to deal damage equal to the damage dealt to it to its controller.
Repeat from step 2 until the opponent loses the game due to having zero or less life, or until the opponent controls no creatures.
If you have a repeated way to deal noncombat damage to any other opponent(s) who control a creature, you may repeat this loop for those opponents.

Activate Grinning Ignus by paying and returning it from the battlefield to your hand, adding .
Cast Grinning Ignus by paying .
Birgi triggers, adding .
Repeat.

Cast any instant or sorcery by paying its mana cost.
Holding priority, activate Pyromancer's Goggles by tapping it, adding .
Cast Increasing Vengeance by paying its mana cost, targeting the instant or sorcery cast in step 1.
Pyromancer's Goggles triggers, copying Increasing Vengeance, with the copy targeting the original Increasing Vengeance.
Resolve the copy of Increasing Vengeance, creating a copy of Increasing Vengeance targeting the original Increasing Vengeance.
Repeat step 5.

You have an additional instant and/or sorcery card in hand.

Cast any other instant and/or sorcery spell by paying its mana cost.
Holding priority, cast Dual Strike by paying , copying the next instant or sorcery spell you cast with mana value 4 or less.
Cast Increasing Vengeance by paying , targeting the instant or sorcery spell cast in step 1.
Dual Strike triggers, copying Increasing Vengeance, with the copy targeting the original Increasing Vengeance.
Resolve the copy of Increasing Vengeance, copying Increasing Vengeance, with the copy targeting the original Increasing Vengeance.
Repeat step 5.

Number of cards in library greater than or equal to the number of cards in each opponent's library.

Cast Peer into the Abyss, targeting yourself.
Psychich Corrosion triggers for each card you've drawn, milling each opponent's libary completely.
Pass the turn to your opponent; They will lose when they attempt to draw a card on their turns.

Mycosynth Lattice causes all permanents to become artifacts, and March of the Machines causes all noncreature artifacts to become artifact creatures with power and toughness each equal to their mana value.
This causes all noncreature artifacts with mana value 0 or less, including lands, currently on the battlefield or that are put onto the battlefield to be put into their owner's graveyard as a state-based action due to having 0 toughness.

Hoard Hauler is a creature and does not have summoning sickness.
An opponent cannot block Hoard Hauler or Hellkite Charger and controls at least seven artifacts.

Declare Hoard Hauler and Hellkite Charger as attackers, attacking an opponent who controls seven or more artifacts.
Hellkite Charger triggers, causing you to pay to untap all attacking creatures and to get an additional combat phase after this one.
Deal combat damage using Hoard Hauler.
Hoard Hauler triggers, creating at least seven Treasure artifact tokens.
Move to your next combat phase.
Declare Hoard Hauler and Hellkite Charger as attackers, attacking an opponent who controls seven or more artifacts.
Hellkite Charger triggers, holding priority, activate seven Treasures by tapping and sacrificing them, adding .
Resolve the Hellkite Charger trigger, causing you to pay to untap all attacking creatures and to get an additional combat phase after this one.
Repeat from step 3.
If the opponent controls eight or more artifacts, this combo nets infinite Treasure tokens.

An opponent has a life total of 40 or higher.

Cast Torgaar either from your hand or from the command zone by paying at most plus commander tax, if applicable.
When Torgaar enters the battlefield, it triggers, causing an opponent to lose an amount of life equal to at least their life total.
The opponent loses the game as a state-based action due to having 0 or less life.

Cast Lich by paying .
Lich entering the battlefield, causing you to lose life equal to your life total.
Cast Repay in Kind by paying , causing each player's life total to become equal to the lowest life total among all players.

You have a creature card in hand that can be cast using no more than one colored mana.
You have enough mana to cast the creature card in hand.

Cast the creature card by paying its mana cost.
The creature enters the battlefield, triggering Tireless Provisioner, creating a Treasure token.
Activate the Treasure token by tapping and sacrificing it, adding one mana of any color.
Activate Trench Behemoth by returning the creature from the battlefield to your hand, untapping Trench Behemoth.
Repeat.

You have a creature card in hand with either morph or megamorph.
Animar has at least three +1/+1 counters.

Cast any creature for either its morph or megamorph cost by paying .
Animar triggers, putting a +1/+1 counter on itself.
Activate Primordial Mist by exiling the face-down creature face-up, allowing you to cast it from exile this turn.
Repeat.

Light of Promise attached to Scurry Oak.
You have a way to gain life.

Gain any amount of life.
Light of Promise triggers, putting a number of +1/+1 counters on Scurry Oak equal to the amount of life gained.
Scurry Oak triggers, creating a 1/1 Squirrel creature token.
The Squirrel enters the battlefield, triggering Ajani's Welcome, causing you to gain 1 life.
Repeat from step 2.

An opponent has more creatures than you.
No creature cards in library.

At the beginning of your upkeep, Oath of Druids triggers, causing you to mill your entire library since it contains no creature cards.
In your draw step, Jace's ability causes you to win the game instead of drawing from an empty library.

Cast Glasspool Mimic by paying .
Glasspool Mimic enters as a copy of Sharuum.
Put Sharuum into the graveyard due to the legend rule.
Glasspool Mimic triggers, returning Sharuum from your graveyard to the battlefield.
Put Sharuum into the graveyard due to the legend rule.
Sharuum enters the battlefield triggers, returning itself from your graveyard to the battlefield.
Repeat from step 5.

You control at least six creatures.

Activate Gaea's Cradle by tapping it, adding at least six .
Activate Wakeroot Elemental by paying , untapping Gaea's Cradle and causing it to become a 5/5 Elemental creature with haste until end of turn that is still a land.
Repeat.

Cast Synth Infiltrator by paying , choosing to have it enter the battlefield as a copy of Sharuum the Hegemon.
Put Synth Infiltrator into your graveyard due to the legend rule.
Synth Infiltrator's enters-the-battlefield ability triggers, returning itself from your graveyard to the battlefield as a copy of Sharuum the Hegemon.
Repeat from step 2.

Cast Chain of Smog by paying , targeting yourself.
Deekah triggers, creating a 0/0 Fractal creature token with two +1/+1 counters on it.
Resolve Chain of Smog, causing you to discard two cards and copy Chain of Smog, targeting yourself with the copy.
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, Impassioned Orator triggers, causing you to gain 1 life.
Repeat from step 2.

Gauntlets of Light attached to Bloom Tender.
Bloom Tender does not have summoning sickness.
There are at least four colors among permanents you control.

Activate Bloom Tender by tapping it, adding at least .
Activate Bloom Tender by paying , untapping it.
Repeat.

Myojin of Cryptic Dreams has at least two indestructible counters on it.

Cast Adaptive Sporesinger by paying its mana cost.
Holding priority, activate Myojin by removing an indestructible counter from it, copying the Adaptive Sporesinger spell three times.
Resolve the first Adaptive Sporesinger spell.
When the Adaptive Sporesinger token enters the battlefield, it triggers, putting an indestructible counter on Myojin.
Repeat from step 2.

This combo results in infinite copies of the Adaptive Sporesinger spell on the stack, which you can then resolve to infinitely proliferate. This can put infinite indestructible counters on Myojin to infinitely copy any permanent spell(s) you cast in the future.

Heartless Hidetsugu does not have summoning sickness.

Activate Vizkopa Guildmage's first ability by paying , giving Heartless Hidetsugu lifelink until end of turn.
Activate Vizkopa Guildmage's second ability by paying , creating a delayed triggered ability.
Activate Heartless Hidetsugu's ability by tapping it, causing Heartless Hidetsugu to deal damage to each player equal to half their life total and causing you to gain life equal to the damage dealt.
The delayed triggered ability from step 2 triggers, causing each opponent to lose life equal to the amount of life you gained.

Cast Mirror Image by paying .
Mirror Image enters as a copy of Sharuum.
Put Sharuum into the graveyard due to the legend rule.
Mirror Image triggers, returning Sharuum from your graveyard to the battlefield.
Put Sharuum into the graveyard due to the legend rule.
Sharuum enters the battlefield triggers, returning itself from your graveyard to the battlefield.
Repeat from step 5.

Activate Viscera Seer by sacrificing a persist creature without a -1/-1 counter on it.
When the persist creature dies, its persist ability and Szarel trigger.
Resolve the Szarel trigger, putting a number of +1/+1 counters on the other persist creature.
Resolve the perist creature's trigger, returning it from your graveyard to the battlefield with a -1/-1 counter on it.
Resolve the Viscera Seer ability.
Repeat.

Activate Viscera Seer by sacrificing Moritte of the Frost.
When Moritte of the Frost dies, it triggers its persist ability, returning itself to the battlefield as a copy of the creature with persist with two +1/+1 counters and one -1/-1 counter on it.
Remove one +1/+1 counter and one -1/-1 counter from Moritte of the Frost as a state-based action.
Resolve the activated ability from step 1, scrying 1.
Repeat.

Cast Time Warp by paying , taking an extra turn after this one.
Cast Archaeomancer by paying .
Archaeomancer enters the battlefield, returning Time Warp to your hand.
Activate Erratic Portal by paying and tapping it, returning Archaeomancer to your hand.
Move to your next turn.
Repeat.

You control lands that can produce at least .
An additional

During an opponent's turn, cast Reset by paying .
In response, activate Nivix Guildmage's second ability by paying , copying Reset.
Allow the Reset copy to resolve, untapping your lands.
Activate those lands by tapping them, adding at least .
Repeat from step 2.
If your lands can produce at least one additional mana, this combo produces infinite mana.
Once you have infinite mana, you may activate Nivix Guildmage's abilities any number of times.

"Sphinx" chosen with Mirror of the Forebears.
Sharuum is your commander.

Activate Mirror of the Forebears by paying , making it a copy of Sharuum.
Put Sharuum into the graveyard due to the legend rule, returning to the command zone.
Cast Sharuum from the command zone by paying plus commander tax.
Sharuum dies due to the legend rule.
Sharuum enters the battlefield triggers, returning itself from your graveyard to the battlefield.
Repeat from step 4.

Activate Carrion Feeder by sacrificing a persist creature without a -1/-1 counter on it.
When the persist creature dies, its persist ability and Szarel trigger.
Resolve the Szarel trigger, putting a number of +1/+1 counters on the other persist creature.
Resolve the perist creature's trigger, returning it from your graveyard to the battlefield with a -1/-1 counter on it.
Resolve the Carrion Feeder ability.
Repeat.

Cast Channel the Suns by paying .
Holding priority, activate Nivix Guildmage's second ability by paying , copying Channel the Suns.
Resolve the copy of Channel the Suns, adding .
Repeat from step 2.

Creatures you control can tap to produce at least .

Activate any number of creatures by tapping it, adding at least .
Activate Elite Arcanist by paying and tapping it, copying Call to Glory and casting the copy without paying its mana cost.
Resolve the copy of Call to Glory, untapping all creatures you control and giving Samurai you control +1/+1 until end of turn.
Repeat.

Activate Carrion Feeder by sacrificing Moritte of the Frost.
When Moritte of the Frost dies, it triggers its persist ability, returning itself to the battlefield as a copy of the creature with persist with two +1/+1 counters and one -1/-1 counter on it.
Remove one +1/+1 counter and one -1/-1 counter from Moritte of the Frost as a state-based action.
Resolve the activated ability from step 1, putting a +1/+1 counter on Carrion Feeder.
Repeat.

Three loyalty counters on Moritte of the Frost.
Any creature on the battlefield has 1 or 2 power.

Activate Moritte of the Frost's first loyalty ability by adding 0 loyalty counters, dealing 3 damage to target creature and having that creature deal 1 or 2 damage to Moritte of the Frost.
Moritte of the Frost triggers but fails to transform.
You must repeat the last step in a mandatory loop, resulting in a game draw.

Fractured Realm is unlocked.

Activate Bloom Tender by tapping it, adding at least .
Activate Derevi by paying , putting it onto the battlefield from the command zone.
Put Derevi into your graveyard due to the legend rule, and then choose to return Derevi to the command zone.
Derevi's enters-the-battlefield ability triggers twice due to Fractured Realm.
Resolve the first trigger, untapping Bloom Tender.
Holding priority, activate Bloom Tender by tapping it, adding at least .
Resolve the second Derevi trigger, untapping Bloom Tender.
Repeat.

Once you have infinite mana, you may untap any permanent(s) using Derevi's trigger. The card you use to clone / copy Derevi must not bypass the legend rule. The copy must be legendary and have Derevi's name for the legend rule to take effect appropriately.

Activate Soltari Guerrillas by paying , targeting any creature an opponent controls.
Willbreaker triggers, causing you to gain control of that creature for as long as you control Willbreaker.
Repeat.
You may also repeat this loop whenever a creature enters the battlefield under an opponent's control.

Cast Endless One for = 0.
Endless One dies to having zero toughness.
Yedora triggers, returning it to the battlefield face-down as a Forest land.
Tap that Forest for .
Activate Primordial Mist by exiling the face-down Endless One, and allowing you to cast it this turn.
Repeat.

An opponent controls no creatures.

At the beginning of your end step, Jon Irenicus triggers, giving control of Emperor Crocodile to an opponent who controls no creatures.
When Emperor Crocodile's controller controls no other creatures, Emperor Crocodile triggers, causing them to sacrifice it.
However, Emperor Crocodile cannot be sacrificed due to its ability.
Emperor Crocodile triggers again, creating a mandatory infinite loop that causes the game to end in a draw.

Cast Ornithopter by paying .
When Ornithopter enters the battlefield as a Forest land due to Ashaya, Lotus Cobra triggers, creating a Treasure artifact token.
Activate the Treasure by tapping and sacrificing it, adding .
Activate Meloku by paying and returning Ornithopter to your hand from the battlefield, creating a 1/1 Illusion creature token with flying.
Repeat.

You control at least two Egg creature tokens.

Activate Carrion Feeder by sacrificing an Egg.
When the Egg dies, Atla Palani triggers, revealing cards from the top of your library until you reveal a creature card and put it onto the battlefield.
When the creature enters the battlefield, if it has power 4 or greater, Life Finds a Way triggers, creating a copy of an Egg token you control.
Resolve the Carrion Feeder ability, putting a +1/+1 counter on it.
Repeat.

This combo will only fetch every creature in your library if all creatures have power 4 or greater. You may use additional Egg tokens to grab as many creatures as possible.

You control at least two Egg creature tokens.

Activate Viscera Seer by sacrificing an Egg.
When the Egg dies, Atla Palani triggers, revealing cards from the top of your library until you reveal a creature card and put it onto the battlefield.
When the creature enters the battlefield, if it has power 4 or greater, Life Finds a Way triggers, creating a copy of an Egg token you control.
Resolve the Viscera Seer ability, causing you to scry 1.
Repeat.

This combo will only fetch every creature in your library if all creatures have power 4 or greater. You may use additional Egg tokens to grab as many creatures as possible.

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, Haliya 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, Thunder of Unity triggers, causing you to gain 1 life and each opponent to lose 1 life.
Repeat from step 2.

You have at least one land card in hand.
Patchwork Crawler does not have summoning sickness.
Trench Behemoth and Llanowar Scout exiled by Patchwork Crawler.

Activate Patchwork Crawler using Llanowar Scout's ability by tapping it, putting a land from your hand onto the battlefield.
If the land is mana-producing and enters the battlefield untapped, you may activate it by tapping it, adding at least .
Activate Patchwork Crawler using Trench Behemoth's ability by returning the land from the battlefield to your hand, untapping Patchwork Crawler.
Repeat.

Activate Carrion Feeder by sacrificing Lesser Masticore.
When Lesser Masticore dies, its persist ability triggers, returning it from your graveyard to the battlefield with a -1/-1 counter on it.
When Lesser Masticore enters, Mm'menon triggers, putting a +1/+1 counter on Lesser Masticore.
Resolve the Carrion Feeder ability.
Repeat.

Activate Viscera Seer by sacrificing Lesser Masticore.
When Lesser Masticore dies, its persist ability triggers, returning it from your graveyard to the battlefield with a -1/-1 counter on it.
When Lesser Masticore enters, Mm'menon triggers, putting a +1/+1 counter on Lesser Masticore.
Resolve the Viscera Seer ability.
Repeat.

"Creature" chosen with Cloud Key.

Activate Grinning Ignus by paying and returning it to your hand, adding .
Cast Grinning Ignus by paying .
Activate Skyshroud Elf by paying , adding .
Repeat.

Activate Anzrag by paying , causing opponents to block Anzrag if able this turn.
If needed, cast the card preventing combat damage by paying its mana cost or activate it.
Declare Anzrag as an attacker, attacking an opponent who controls a creature.
The opponent is forced to block Anzrag, triggering Anzrag, untapping all creatures you control and causing you to get an additional combat phase after this one.
Any combat damage that would be dealt is prevented due to Fog.
Repeat from step 3 each combat phase.

Depending on the card used to prevent combat damage, additional mana and pre-requisites may be required.