Trench Behemoth, Fastbond, and Swiftwater Cliffs

Prerequisites

• Trench Behemoth on the battlefield
• Fastbond on the battlefield
• Swiftwater Cliffs on the battlefield

Steps

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