Darien, King of Kjeldor, Havoc Jester, Ashnod's Altar, and Zulaport Cutthroat

Prerequisites

• Darien, King of Kjeldor on the battlefield
• Havoc Jester on the battlefield
• Ashnod's Altar on the battlefield
• Zulaport Cutthroat on the battlefield

Steps

1. Activate Ashnod's Altar by sacrificing a creature, adding When the creature dies, Zulaport Cutthroat and Havoc Jester trigger
2. Resolve the Zulaport Cutthroat trigger, causing you to gain 1 life and each opponent to lose 1 life Resolve the Havoc Jester trigger, dealing 1 damage to you
3. Darien triggers, creating a 1/1 Soldier creature token
4. Repeat

Results

• Infinite colorless mana
• Infinite creature ETB
• Infinite creature LTB
• Infinite creature sacrifice triggers
• Infinite death triggers
• Infinite lifegain triggers
• Infinite lifeloss