This is my Type 4 stack! I use a house-ruled version of the generally accepted Type 4 rules [noted here: https://mtg.fandom.com/wiki/Type_4 ]

Main Rules

• 2+ players, Free-For-All
• Players have infinite mana of every type available at all times
• Starting Hand size = 4
• Starting Life = 20

House Rules

• Each player may only cast 2 spells from their hand each turn. [The original rule is only 1 spell per turn, regardless of zone.]

• Spells cast from other zones (graveyard, exile, top of library, etc.) don't count towards this limit.

• Land drops don't count towards this either.

• Max hand size = 7

• No Mulligans

• If a card would be shuffled into or placed on the bottom of a library, exile it instead. (So we only see cards once per session.)

• If a card is originally from your stack from the start of the game, you're considered to "own" it for effects that care about that.

• You also "own" cards/effects that enter games from previous games (eg. Double Deal)

• Each player helps shuffle the stack and takes a deck-sized-ish pile of cards to use as their deck.

• Players maintain their own graveyards.

• When a game ends, exile all cards from that game and start a new one, refreshing your stack as it gets low (you cannot be milled out.)

• And last but not least; not really a rule but: If you win the game with an alternate win condition card (eg. The Cheese Stands Alone,) you get to sign the card!

PS. - Okay not really a rule or errata either but if you play Mise and blindly name the card correctly you get to sign Mise.

Background / Philosophy

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I inherited the house-rules (including card-signing) from another regular at an old LGS who had their own stack. After seeing the "original" versions of the rules though I decided to keep these. The games feel more chaotic and even more overpowered, which I enjoy. And the ability to cast multiple spells each turn means you can have things like mini counter-wars, it adds an extra little dimension of strategy on when to "use up" your spells.

I don't draft my stack. Just shuffle up and play! This makes it a great format to play before, in-between, and/or after rounds at FNM. Two player games can be especially quick.

Most spells with costs are left out on purpose, because drawing Fireball, or activating Shivan Dragon a million times and immediately one-shotting someone isn't really fun. There are exceptions which are mostly self-evident.

Blue is the most prevalent color because Counterspells & Card Draw. But unlike other formats, since we don't need mana fixing it's less about the colors and more the effects themselves so there's not a huge need to balance the ratios. If you're building your own list with a "color hate"/"colors matter" theme though, I could see doing it then.

Because mana is infinite, CMC / MV also doesn't matter, so if there's an effect like "Draw 3", instead of using the "best" versions of that effect (like Ancestral Recall) I like using chaff or underused cards like Reverse Engineer. It adds a little extra personality to the cube, especially when you're not familiar with the card.

There's a good number of Un-set cards in the list, because I really enjoy getting silly and being able to play with things you couldn't normally play with outside of Limited. A number of Gotcha! spells like Spell Counter and Deal Damage are in the list too. They end up either being really funny or incredibly annoying, depending on the group and who's casting them, so I have ONE custom card I created (in addition to adding Look at Me, I'm the DCI) to help curb them a bit:

The Colonel
Sorcery - "~ cannot be countered. Name or describe any number of cards with "Gotcha!" that have been played this game, then exile those cards. Naming/describing the cards while this spell is resolving does not trigger "Gotcha!" abilities."
(I just realized this should probably have Split Second too...
Oops ¯_(ツ)_/¯)

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Card Errata

Some cards have been physically errata'd listed below, mostly for power level reasons. Turns out casting spells for free and infinite mana means some cards are really broken!

Errata list:

• Drannith Magistrate: change "Your opponents" to "Players"*
• Edgin, Larcenous Lutenist: delete the whole Foretell ability**
• Expansion // Explosion: Explosion is deleted--it's just Expansion!
• Magar of the Magic Strings: activation cost includes now
• Mischievous Quanar: The 'turned face up' ability is limited to Once Per Spell***.
• Perplex: Transmute ability is deleted
• Pir's Whim: (Delete everything for the "Friend".) EG., text reads "For each player, choose foe. Each foe sacrifices an artifact or enchantment they control.
• Prism Array: Scry 3 ability is limited to Once per Turn
• Sharp-Eyed Rookie: For brevity's sake changed to "Evolve" + "When ~ Evolves... ____". Slightly functionally different but who cares
• Transmutation Font: delete the whole second ability.
• Triskaidekaphile: Delete the "draw a card" ability.
• Universal Surveillance: can only be paid for by improvising.
• X: The last ability has a activation cost.

*Considering the nature of the rules I figured the asymmetry was too good.
**Again, considering the nature of the rules getting to bypass the spell limit by foretelling everything in your hand is crazy good
**So originally Mischievous Quanar was not errata'd. That all changed when someone copied Worst Fears a billion times to win the game. (Honestly the current errata is probably still too strong, but whatever.) "Once per spell" meaning it can only target an individual spell-object once.