Soulherder, Mnemonic Wall, and Walk the Aeons

Prerequisites

• Soulherder on the battlefield
• Mnemonic Wall on the battlefield
• Walk the Aeons in hand
• each turn available

Steps

1. With Soulherder and a creature based spell recursion effect on the battlefield, cast the extra turn spell
2. Move to end step and target the creature with Soulherder's ability
3. When creature re-enters the battlefield, target the extra turn spell in your graveyard and return it to your hand, then pass to yourself
4. Repeat

Results

• Infinite turns