Thassa, Deep-Dwelling, Mnemonic Wall, and Time Stretch

Prerequisites

• Thassa, Deep-Dwelling on the battlefield
• Mnemonic Wall on the battlefield
• Time Stretch in hand
• every other turn available

Steps

1. Cast Time Stretch by paying , getting two extra turns after this one
2. At the beginning of your end step, Thassa triggers, blinking Mnemonic Wall
3. Mnemonic Wall enters the battlefield, returning Time Stretch from your graveyard to your hand
4. Repeat every other turn

Results

• Infinite turns