Progenitor Mimic, Temporal Manipulation, and Eternal Witness

Prerequisites

• Progenitor Mimic on the battlefield
• Temporal Manipulation on the battlefield
• Eternal Witness on the battlefield
• undefined

Steps

1. Cast Temporal Manipulation 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 Eternal Witness
3. When the token Eternal Witness enters the battlefield, it triggers itself, returning Temporal Manipulation from your graveyard to your hand
4. Repeat

Results

• Infinite turns