Cacophodon, Hammerfist Giant, and Heroic Intervention

Prerequisites

• Cacophodon on the battlefield
• Hammerfist Giant on the battlefield
• Heroic Intervention in hand
• Hammerfist Giant does not have summoning sickness
• Your life total is at least four greater than each opponent's life total
• available

Steps

1. Cast Heroic Intervention by paying , giving permanents you control hexproof and indestructible until end of turn
2. Activate Hammerfist Giant by tapping it, dealing 4 damage to each creature without flying and each player
3. Cacophodon triggers, untapping Hammerfist Giant
4. Repeat from step 2

Results

• Infinite damage