Darien, King of Kjeldor, Havoc Jester, Soul's Attendant, and Bloodflow Connoisseur

Prerequisites

• Darien, King of Kjeldor on the battlefield
• Havoc Jester on the battlefield
• Soul's Attendant on the battlefield
• Bloodflow Connoisseur on the battlefield

Steps

1. Activate Bloodflow Connoisseur 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, Soul's Attendant triggers, causing you to gain life Resolve the Bloodflow Connoisseur 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