Darien, King of Kjeldor, Havoc Jester, Yahenni, Undying Partisan, and Overgrowth Elemental

Prerequisites

• Darien, King of Kjeldor on the battlefield
• Havoc Jester on the battlefield
• Yahenni, Undying Partisan on the battlefield
• Overgrowth Elemental on the battlefield

Steps

1. Activate Yahenni by sacrificing a creature When the creature dies, Overgrowth Elemental and Havoc Jester trigger
2. Resolve the Overgrowth Elemental trigger, causing you to gain 1 life Resolve the Havoc Jester trigger, dealing 1 damage to you
3. Darien triggers, creating a 1/1 Soldier creature token
4. Resolve the Yahenni ability, giving them indestructible until end of turn
5. Repeat

Results

• Infinite creature ETB
• Infinite creature LTB
• Infinite creature sacrifice triggers
• Infinite death triggers
• Infinite lifegain triggers