Serra the Benevolent, Coalhauler Swine, and Volcano Hellion

Prerequisites

• Serra the Benevolent in hand or on the battlefield or in the command zone or in exile or in the graveyard or in the library
• Coalhauler Swine on the battlefield
• Volcano Hellion in hand
• You have Serra the Benevolent's emblem
• An additional creature on the battlefield under any player's control
• available

Steps

1. Cast Volcano Hellion by paying
2. Volcano Hellion enters the battlefield, triggering itself, dealing an arbitrarily large amount of damage to Coalhauler Swine and to you, which does not reduce your life total below 1 due to Serra the Benevolent's emblem
3. Coalhauler Swine triggers, dealing an equal amount of damage to each player, which again does not reduce your life total below 1

Results

• Infinite damage