Cacophodon + Hammerfist Giant + Heroic Intervention

Prerequisites

• Hammerfist Giant does not have summoning sickness.
• Your life total is at least four greater than each opponent's life total.

Steps

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

Effects

• Infinite damage