Malcolm, Keen-Eyed Navigator + Magmaw + Runed Stalactite + Exalted Sunborn

Malcolm, Keen-Eyed Navigator

Magmaw

Runed Stalactite

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 clever loop turns Magmaw into a lethal engine by using Runed Stalactite to dress it up as a Pirate, satisfying Malcolm, Keen-Eyed Navigator's trigger whenever Magmaw deals damage. The sacrifice outlet fuels its own activation cost while sending a nonland permanent to the graveyard, which Malcolm rewards by generating Treasures. To supercharge the setup, Exalted Sunborn steps in with its passive ability to double every Treasure token created, ensuring you generate more mana than you spend to keep the loop going.