Malcolm, Keen-Eyed Navigator + Magmaw + Unnatural Selection + Xorn

Prerequisites

• You control another nonland permanent.

Steps

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

Effects

• Infinite damage