Agatha's Soul Cauldron, Hidetsugu Consumes All // Vessel of the All-Consuming, and Walking Ballista

Prerequisites

• Agatha's Soul Cauldron on the battlefield
• Hidetsugu Consumes All // Vessel of the All-Consuming on the battlefield
• Walking Ballista in exile
• Vessel of the All-Consuming has at least one +1/+1 counter on it

Steps

1. Activate Vessel of the All-Consuming using Walking Ballista's second ability by removing a +1/+1 counter from it, dealing 1 damage to an opponent
2. Vessel of the All-Consuming's first ability triggers, as well as its second ability if it has dealt 10 or more damage to the opponent this turn
3. Resolve the first trigger, putting a +1/+1 counter on Vessel of the All-Consuming
4. Resolve the second trigger, if applicable, causing the opponent to lose the game
5. Repeat

Results

• Each opponent loses the game
• Infinite damage