Agatha's Soul Cauldron, Triskelion, and Christine Chapel, Combat Medic

Prerequisites

• Agatha's Soul Cauldron on the battlefield
• Triskelion in exile
• Christine Chapel, Combat Medic on the battlefield

Steps

1. Activate Christine Chapel by using Triskelion's ability by removing a +1/+1 counter from it, dealing 1 damage to any target and causing you to gain 1 life due to its lifelink
2. Christine Chapel triggers, putting two +1/+1 counters on it
3. Repeat

Results

• Infinite +1/+1 counters on a creature
• Infinite damage
• Infinite lifegain
• Infinite lifegain triggers