Malcolm, Keen-Eyed Navigator + Havoc Jester + Amoeboid Changeling

Prerequisites

• You control at least one Treasure token.
• Amoeboid Changeling does not have summoning sickness.

Steps

1. 1Activate Amoeboid Changeling's first ability by tapping it, causing Havoc Jester to gain all creature types until end of turn.
2. 2Activate a Treasure token by tapping and sacrificing it, adding one mana of any color.
3. 3Havoc Jester triggers, dealing 1 damage to any opponent.
4. 4Malcolm triggers, creating a Treasure token.
5. 5Repeat from step 2.

Effects

• Infinite colored mana
• Infinite damage