Malcolm, Keen-Eyed Navigator + Conspiracy + Mayhem Devil

Malcolm, Keen-Eyed Navigator
Conspiracy
Mayhem Devil

Requires
All permanents on the battlefield. You control at least one Treasure token. "Pirate" chosen with Conspiracy.
Steps
  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
Results
Infinite damage. Infinite colored mana.