Thassa, Deep-Dwelling, Wanderwine Prophets, and Benthicore

Prerequisites

• Thassa, Deep-Dwelling on the battlefield
• Wanderwine Prophets on the battlefield
• Benthicore on the battlefield
• Wanderwine Prophets does not have summoning sickness and cannot be blocked and killed by an opponent
• You control at least one additional Merfolk

Steps

1. Deal combat damage to an opponent using Wanderwine Prophets
2. Wanderwine Prophets triggers, causing you to sacrifice a Merfolk to take an extra turn after this one
3. At the beggining of the end step, Thassa triggers, blinking Benthicore
4. Benthicore enters the battlefield, creating two 1/1 Merfolk Wizard creature tokens
5. Repeat

Results

• Infinite turns