Malcolm, Keen-Eyed Navigator + Magmaw + Xenograft + Exalted Sunborn

Malcolm, Keen-Eyed Navigator

Magmaw

Xenograft

Exalted Sunborn

How it works

1. Activate Magmaw by paying 1 and sacrificing another nonland permanent, dealing 1 damage to an opponent.
2. Malcolm triggers, creating two Treasure tokens.
3. Activate a Treasure by tapping and sacrificing it, adding 1.
4. Repeat.

This loop relies on Xenograft to turn all your creatures into Pirates, ensuring that every nonland permanent you sacrifice to Magmaw's ability can trigger Malcolm, Keen-Eyed Navigator when dealing damage to an opponent. Because Exalted Sunborn doubles the tokens you create, Malcolm's triggered ability rewards you with two Treasure tokens instead of one every time Magmaw deals damage. Sacrificing one of those Treasures generates the mana needed to fuel Magmaw's next activation, leaving you with a permanent surplus to close out the game.