Malcolm, Keen-Eyed Navigator + Magmaw + Anointed Procession + Imagecrafter

Malcolm, Keen-Eyed Navigator

Magmaw

Anointed Procession

Imagecrafter

How it works

1. Activate Imagecrafter by tapping it, causing Magmaw to become a Pirate until end of turn.
2. Activate Magmaw by paying 1 and sacrificing another nonland permanent, dealing 1 damage to an opponent.
3. Malcolm triggers, creating two Treasure tokens.
4. Activate a Treasure by tapping and sacrificing it, adding 1.
5. Repeat from step 2.

This clever loop begins with Imagecrafter dynamically altering Magmaw's creature type to make it a Pirate, allowing it to trigger Malcolm, Keen-Eyed Navigator's ability whenever it deals damage. When Magmaw uses its own activated ability to sacrifice a nonland permanent and hurl 1 damage at an opponent, Malcolm responds by generating a Treasure token. Because Anointed Procession is sitting passively on the battlefield, that single token generation is doubled into two Treasure tokens. Sacrificing those Treasurers for mana then fuels the loop indefinitely, turning Magmaw into an infinite-damage engine.