Toralf, God of Fury // Toralf's Hammer, and Dawnsire, Sunstar Dreadnought

Prerequisites

• Toralf, God of Fury // Toralf's Hammer on the battlefield
• Dawnsire, Sunstar Dreadnought on the battlefield

Steps

1. Declare any creature as an attacker
2. Dawnsire triggers, dealing 100 damage to a creature or planeswalker an opponent controls
3. Toralf triggers, dealing daamge equal to the excess damage dealt in step 1 to any target

Results

• Near-infinite damage to any target