Sage of Hours, Master Biomancer, and Thassa, Deep-Dwelling

Prerequisites

• Sage of Hours on the battlefield
• Master Biomancer on the battlefield
• Thassa, Deep-Dwelling on the battlefield
• Master Biomancer has power 5 or greater

Steps

1. At the beginning of your end step, Thassa triggers, blinking Sage of Hours and causing it to enter the battlefield with five or more +1/+1 counters on it due to Master Biomancer
2. Activate Sage of Hours by removing all +1/+1 counters from it, causing you to take at least one extra turn after this one
3. Repeat each turn

Results

• Infinite turns