Mirror-Mad Phantasm, Legion Loyalty, and Thassa's Oracle

Prerequisites

• Mirror-Mad Phantasm on the battlefield
• Legion Loyalty on the battlefield
• Thassa's Oracle in hand
• Mirror-Mad Phantasm does not have summoning sickness
• You have at least two opponents
• available

Steps

1. Declare Mirror-Mad Phantasm as an attacker
2. Mirror-Mad Phantasm's myriad ability triggers, creating a token copy of itself tapped and attacking each other opponent
3. Activate a Mirror-Mad Phantasm token by paying , causing you to shuffle it into your library, then reveal and mill your entire library due to not having a card named Mirror-Mad Phantasm in it
4. Cast Thassa's Oracle by paying
5. Thassa's Oracle enters the battlefield, causing you to win the game

Results

• Infinite self-mill
• Win the game