Mairsil, the Pretender, Mirror-Mad Phantasm, and Thassa's Oracle

Prerequisites

• Mairsil, the Pretender on the battlefield
• Mirror-Mad Phantasm in exile
• Thassa's Oracle in hand
• Mirror-Mad Phantasm exiled with a cage counter on it
• available

Steps

1. Activate Mairsil using Mirror-Mad Phantasm's ability by paying , putting your entire library into your graveyard
2. Cast Thassa's Oracle by paying
3. Thassa's Oracle enters the battlefield, winning you the game

Results

• Win the game