Boxing Ring, Clock of Omens, and Doubling Season

Prerequisites

• Boxing Ring on the battlefield
• Clock of Omens on the battlefield
• Doubling Season on the battlefield
• You control a creature that has fought this turn

Steps

1. Activate Boxing Ring by tapping it, creating two Treasure artifact tokens
2. Activate Clock of Omens by tapping the Treasures, untapping Boxing Ring
3. Repeat

Results

• Infinite tapped Treasure tokens