Darien, King of Kjeldor, Havoc Jester, Carrion Feeder, and Leyline of Vitality

Prerequisites

• Darien, King of Kjeldor on the battlefield
• Havoc Jester on the battlefield
• Carrion Feeder on the battlefield
• Leyline of Vitality on the battlefield

Steps

1. Activate Carrion Feeder by sacrificing a creature
2. When the creature dies, Havoc Jester triggers, dealing 1 damage to you
3. Darien triggers, creating a 1/1 Soldier creature token
4. When the Soldier enters, Leyline of Vitality triggers, causing you to gain life Resolve the Carrion Feeder ability
5. Repeat

Results

• Infinite +1/+1 counters on a creature
• Infinite creature ETB
• Infinite creature LTB
• Infinite creature sacrifice triggers
• Infinite death triggers
• Infinite lifegain triggers