Malcolm, Keen-Eyed Navigator + Magmaw + Imagecrafter + Xorn

Malcolm, Keen-Eyed Navigator

Magmaw

Imagecrafter

Xorn

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 ingenious loop turns humble type-shifting into a lethal engine by casting Magmaw in the unexpected role of a Pirate, a trick made possible by Imagecrafter's active ability. Once Magmaw gains that crucial creature type, its own activated ability lets you sacrifice a nonland permanent to hurl damage at an opponent, triggering Malcolm, Keen-Eyed Navigator to generate loot whenever your Pirates deal damage. Thanks to Xorn's replacement effect, each of those triggers generates an extra Treasure token, yielding enough mana when you sacrifice them to fund Magmaw's activation and keep the chain firing indefinitely.