Dawnsire, Sunstar Dreadnought, and Barbed Servitor

Prerequisites

• Dawnsire, Sunstar Dreadnought on the battlefield
• Barbed Servitor on the battlefield

Steps

1. Declare any creature as an attacker
2. Dawnsire triggers, dealing 100 damage to Barbed Servitor
3. Barbed Servitor triggers, causing an opponent to lose 100 life

Results

• Near-infinite lifeloss for target opponent