Malcolm, Keen-Eyed Navigator, Mayhem Devil, and Unnatural Selection

Prerequisites

• Malcolm, Keen-Eyed Navigator on the battlefield
• Mayhem Devil on the battlefield
• Unnatural Selection on the battlefield
• You control at least one Treasure token
• available

Steps

1. Activate Unnatural Selection by paying , causing Mayhem Devil to become a Pirate until end of turn
2. Activate a Treasure token by tapping and sacrificing it, adding one mana of any color
3. Mayhem Devil triggers, dealing 1 damage to an opponent
4. Malcolm triggers, creating a Treasure token
5. Repeat from step 2

Results

• Infinite colored mana
• Infinite damage