Heartless Hidetsugu, Pariah's Shield, and Gratuitous Violence

Prerequisites

• Heartless Hidetsugu on the battlefield
• Pariah's Shield on the battlefield
• Gratuitous Violence on the battlefield

Steps

1. Activate Heartless Hidetsugu by tapping it, dealing damage to each opponent equal to half their life total, rounded down, times 2, and dealing no damage to you due to Pariah's Shield

Results

• Near-infinite damage