Fiendlash, and Spitemare

Prerequisites

• Fiendlash on the battlefield
• Spitemare on the battlefield

Steps

1. Deal damage to Spitemare Fiendlash and Spitemare trigger
2. Resolve the Spitemare trigger, dealing damage to any target
3. Resolve the Spitemare trigger, dealing at least 1 damage to itself
4. Repeat from step 2

Results

• Infinite damage