Progenitor Mimic, Capture of Jingzhou, and Warden of the Eye

Prerequisites

• Progenitor Mimic on the battlefield
• Capture of Jingzhou on the battlefield
• Warden of the Eye on the battlefield
• Enough mana available to cast the extra turn spell each turn
• Progenitor Mimic is a copy of Warden of the Eye

Steps

1. Cast Capture of Jingzhou by paying its mana cost, taking an extra turn after this one
2. At the beginning of your next upkeep, Progenitor Mimic triggers, creating a token copy of Warden of the Eye
3. When the token Warden of the Eye enters the battlefield, it triggers itself, returning Capture of Jingzhou from your graveyard to your hand
4. Repeat

Results

• Infinite turns