Trench Behemoth, Fastbond, and Dismal Backwater

Prerequisites

• Trench Behemoth on the battlefield
• Fastbond on the battlefield
• Dismal Backwater on the battlefield

Steps

1. Activate Trench Behemoth by returning Dismal Backwater from the battlefield to your hand, untapping it
2. Play Dismal Backwater, triggering it and Fastbond
3. Resolve the Dismal Backwater 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