Mirror-Mad Phantasm, and Dermotaxi

Prerequisites

• Mirror-Mad Phantasm in exile
• Dermotaxi on the battlefield
• You control at least two untapped creatures
• available

Steps

1. Activate Dermotaxi by tapping two creatures you control, causing it to become a copy of Mirror-Mad Phantasm until end of turn
2. Activate Dermotaxi by paying , shuffling Dermotaxi into your library and milling your entire library due to it not having a card named Mirror-Mad Phantasm in it

Results

• Infinite self-mill