Sage of Hours, Light of Promise, and Celestial Mantle

Prerequisites

• Sage of Hours on the battlefield
• Light of Promise on the battlefield
• Celestial Mantle on the battlefield
• Light of Promise attached to Sage of Hours
• Celestial Mantle attached to a creature that can attack this turn and that cannot be blocked and killed by an opponent
• Your life total is at least 5

Steps

1. Deal combat damage to an opponent using the creature that has Celestial Mantle attached
2. Celestial Mantle triggers, doubling your life total
3. Sage of Hours triggers, putting a number of +1/+1 counters on it equal to the life you gained
4. Activate Sage of Hours by removing all +1/+1 counters from it, causing you to take at least one extra turn after this one
5. Repeat each turn

Results

• Infinite turns