Repercussion, Screaming Nemesis, and Pariah's Shield

Prerequisites

• Repercussion on the battlefield
• Screaming Nemesis on the battlefield
• Pariah's Shield on the battlefield

Steps

1. Deal damage to Screaming Nemesis
2. Screaming Nemesis and Repercussion trigger
3. Resolve the Screaming Nemesis trigger, dealing damage to an applicable target
4. Resolve the Repercussion trigger, dealing damage to Screaming Nemesis instead of you due to Pariah's Shield
5. Repeat from step 2

Results

• Infinite damage