Dawnsire, Sunstar Dreadnought, and Donna Noble

Prerequisites

• Dawnsire, Sunstar Dreadnought on the battlefield
• Donna Noble on the battlefield

Steps

1. Declare any creature as an attacker
2. Dawnsire triggers, dealing 100 damage to Donna Noble
3. Donna Noble triggers, dealing 100 damage to target opponent

Results

• Near-infinite damage to target opponent