Altar of Dementia + Eirdu, Carrier of Dawn // Isilu, Carrier of Twilight + Stormbound Geist

WUB identity

Commander legal

The 3 combo pieces

• Altar of Dementia
• Eirdu, Carrier of Dawn // Isilu, Carrier of Twilight
• Stormbound Geist

How to execute it

1. Activate Altar of Dementia by sacrificing Stormbound Geist
2. When Stormbound Geist dies, its undying ability triggers, returning it from your graveyard to the battlefield with a +1/+1 counter on it.
3. Activate Altar of Dementia by sacrificing Stormbound Geist
4. When Stormbound Geist dies, its persist ability triggers, returning it from your graveyard to the battlefield with a -1/-1 counter on it.
5. Resolve both Altar of Dementia abilities from step 1 and 3.
6. Repeat.

What the combo produces

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