Reyhan, Last of the Abzan, Altar of Dementia, Arwen, Weaver of Hope, and Scurry Oak

Prerequisites

• Reyhan, Last of the Abzan on the battlefield
• Altar of Dementia on the battlefield
• Arwen, Weaver of Hope on the battlefield
• Scurry Oak in hand
• available

Steps

1. Cast Scurry Oak by paying its mana cost, causing it to enter with a +1/+1 counter due to Arwen
2. When Scurry Oak enters, it triggers, creating a creature token that enters with a +1/+1 counter due to Arwen
3. Activate Altar of Dementia by sacrificing the creature token
4. When the creature token dies, Reyhan triggers, putting a number of +1/+1 counters on Scurry Oak Scurry Oak triggers, creating a creature token that enters with a +1/+1 counter due to Arwen
5. Resolve the Altar of Dementia ability
6. Repeat from step 3

Results

• Infinite mill
• Infinite +1/+1 counters on a creature
• Infinite ETB
• Infinite LTB
• Infinite death triggers
• Infinite sacrifice triggers
• Infinite self-mill