Trench Behemoth, Fastbond, and Sejiri Refuge

Prerequisites

• Trench Behemoth on the battlefield
• Fastbond on the battlefield
• Sejiri Refuge on the battlefield

Steps

1. Activate Trench Behemoth by returning Sejiri Refuge from the battlefield to your hand, untapping it
2. Play Sejiri Refuge, triggering it and Fastbond
3. Resolve the Sejiri Refuge trigger, causing you to gain 1 life
4. Resolve the Fastbond trigger, dealing 1 damage to you
5. Repeat

Results

• Infinite landfall triggers
• Infinite lifegain triggers