Hawkeye's Bow, and Tidewater Minion

Prerequisites

• Hawkeye's Bow on the battlefield
• Tidewater Minion on the battlefield

Steps

1. Activate Tidewater Minion by tapping it, targeting itself
2. Hawkeye's Bow triggers, dealing 1 damage to each opponent
3. Resolve the Tidewater Minion ability, untapping it
4. Repeat

Results

• Infinite damage