RULES

• Everyone has infinite mana at all times. (And every basic land type.)
• Each player can only play one spell each turn.
• If two activated abilities would conflict infinite times, the "defensive" ability wins. i.e. - The ability that prevents a card from leaving the battlefield/stack/etc

My playgroup always plays with an additional rule, but it's still fun without it:

• Spells cast via an alternate casting cost don't count as your spell for the turn. i.e. - Force of Will, Morph creatures, Flares.

DRAFTING

Drafting isn't necessary. In between rounds of regular limited, I'll pull out two stacks of roughly 60 cards from the cube and say "Here's your deck, you have infinite mana and you can play one spell per turn."

If you have time, drafting the cube is even better. 4 packs of 15 each - no sideboards.
If you have first-timers, I'd suggest doing Rochester Draft. This way you can discuss the picks, and everyone can see every card that's drafted. (Packs are drafted one at a time, face up.)

Solomon Draft is also great for 2-player drafting. (Every Pack is a Fact or Fiction)

Try it out and let me know what you think!

You can find me on Discord at shark.shark or bsky @misprintshark.bsky.social if you have any questions!

HISTORY

Limited Infinity (aka Type 4) is a format from the early 2000's, created by Paul Mastriano.

This stack of cards is designed to be drafted among however many players you have, then played either head-to-head, or in a multiplayer game.

The original decklist is in the link at the beginning of this primer, but it only has 230ish cards. I built a stack of those cards, and added new things to it over the years until it got too full of good removal.

In 2023, I calculated the ratios to an increase to 500 cards total, and removed all of the tutors (because people who aren't familiar with the cards will slow the game down DRASTICALLY when searching and reading every card).

This is the revamped and updated 2025 Limited Infinity Type 4 Stack.

In the most recent update, I've completely removed all Masticores as well as Damage Prevention cards. I increased the number of Draw spells, but reduced the power level of the cards themselves.

I found that a lot of the incredibly powerful cards could really swing matches until the controller eventually just won through sheer card advantage.

I set some strict rules for myself while doing the most recent update:

DRAW

• Maximum Sorcery Draw: 4 cards.
• Maximum Instant Draw: 2 cards.
• Maximum repeatable Draw: 2 cards.

LARGE MEN

• Large Flying Creatures - 4 turn clock maximum (6 power)
• Large Ground Creatures - 3 turn clock maximum (7 power)
• If a Large Man has an insane ability, maybe find a smaller version of it - this allows for Utility creatures to be stronger.

RECURSION

• Sorcery - 2 targets, or everyone gets everything.
• Instant - 1 target, or everyone gets everything.

REMOVAL

• Individual cards shouldn't be able to answer everything.
• Remove most modal spells (Charms)
• Make spells more narrow.

FREE SPELLS

• Should be worse than their normal counterparts.
• Morph creatures should be not as large/powerful as Large Men.

There's still some tweaking to do, but this was my thought process.