Malcolm, Keen-Eyed Navigator + Magmaw + Imagecrafter + Primal Vigor

Malcolm, Keen-Eyed Navigator

Magmaw

Imagecrafter

Primal Vigor

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 turns your own sacrifice outlet into a lethal weapon by bending creature types to your will. By using Imagecrafter to make Magmaw a Pirate, every point of damage it deals to an opponent triggers Malcolm, Keen-Eyed Navigator to produce Treasure tokens. Thanks to Primal Vigor doubling those tokens, sacrificing a nonland permanent to fund Magmaw's ability yields more mana than it costs, letting you loop the process to deal infinite damage to your opponents.