Darien, King of Kjeldor, Havoc Jester, Altar of Dementia, and Syr Vondam, Sunstar Exemplar

Prerequisites

• Darien, King of Kjeldor on the battlefield
• Havoc Jester on the battlefield
• Altar of Dementia on the battlefield
• Syr Vondam, Sunstar Exemplar on the battlefield

Steps

1. Activate Altar of Dementia by sacrificing a creature When the creature dies, Syr Vondam and Havoc Jester trigger
2. Resolve the Syr Vondam trigger, causing you to gain 1 life and put a +1/+1 counter on Syr Vondam Resolve the Havoc Jester trigger, dealing 1 damage to you
3. Darien triggers, creating a 1/1 Soldier creature token
4. Resolve the Altar of Dementia ability, milling the targeted player a number of cards equal to the sacrificed creature's power
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
• Infinite mill
• Infinite self-mill