Mirror-Mad Phantasm, and Cackling Counterpart

Prerequisites

• Mirror-Mad Phantasm on the battlefield
• Cackling Counterpart in hand
• available

Steps

1. Cast Cackling Counterpart by paying , creating a token copy of Mirror-Mad Phantasm
2. Activate the Mirror-Mad Phantasm token by paying , shuffling the token 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