Malcolm, Keen-Eyed Navigator + Conspiracy + Mayhem Devil

Malcolm, Keen-Eyed Navigator

Conspiracy

Mayhem Devil

How it works

1. Activate a Treasure token by tapping and sacrificing it, adding one mana of any color.
2. Mayhem Devil triggers, dealing 1 damage to any target opponent.
3. Malcolm triggers, creating a Treasure token.
4. Repeat.

This clever loop turns the humble Treasure token into a relentless engine of destruction, fueled entirely by the quiet power of Conspiracy. By naming Pirates as Conspiracy's chosen creature type, every single creature you control—regardless of its actual printed type—gains the Pirate subtype, allowing Malcolm, Keen-Eyed Navigator to trigger whenever any of your permanents deal damage to an opponent. When you sacrifice a Treasure token for mana, Mayhem Devil springs into action to ping an opponent, which in turn causes Malcolm to create a brand-new Treasure token to replace the one you just spent. Because Mayhem Devil's damage counts as damage dealt by your permanents, this self-sustaining cycle feeds into itself indefinitely, generating an infinite supply of colored mana and infinite damage to close out the game.