Malcolm, Keen-Eyed Navigator + Magmaw + Unnatural Selection + Stridehangar Automaton

Malcolm, Keen-Eyed Navigator

Magmaw

Unnatural Selection

Stridehangar Automaton

How it works

1. Activate Unnatural Selection by paying 1, 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 a Treasure and a 1/1 Thopter artifact creature token
4. Activate a Treasure by tapping and sacrificing it, adding 1.
5. Repeat from step 2.

This clever loop hinges on Unnatural Selection's ability to rewrite creature types, turning Magmaw into a Pirate so its damage-dealing activation triggers Malcolm, Keen-Eyed Navigator. Every time Magmaw sacrifices a permanent to deal 1 damage to an opponent, Malcolm rewards you with a Treasure token. Meanwhile, Stridehangar Automaton provides a crucial passive engine, upgrading every single Treasure creation into *both* a Treasure and an extra 1/1 Thopter artifact creature token with flying. You can then sacrifice those very same Thopters to fuel Magmaw's activation cost and loop the process indefinitely, burning out your opponents with endless damage.