Altar of Dementia, and First Day of Class

Prerequisites

• Altar of Dementia on the battlefield
• First Day of Class in hand
• available

Steps

1. Cast First Day of Class by paying
2. Activate Altar of Dementia by sacrificing the persist creature
3. When the persist creature dies, its persist ability triggers, returning it from your graveyard to the battlefield with a -1/-1 counter on it
4. When the persist creature enters, First Day of Class triggers, putting a +1/+1 counter on the persist creature
5. Resolve the Altar of Dementia ability
6. Repeat from step 2

Results

• Infinite ETB
• Infinite LTB
• Infinite death triggers
• Infinite mill
• Infinite sacrifice triggers
• Infinite self-mill