Altar of Dementia + Eirdu, Carrier of Dawn // Isilu, Carrier of Twilight + Evernight Shade

WB identity

Commander legal

The 3 combo pieces

• Altar of Dementia
• Eirdu, Carrier of Dawn // Isilu, Carrier of Twilight
• Evernight Shade

How to execute it

1. Activate Altar of Dementia by sacrificing Evernight Shade
2. When Evernight Shade dies, its undying ability triggers, returning it from your graveyard to the battlefield with a +1/+1 counter on it.
3. Resolve the Altar of Dementia ability.
4. Activate Altar of Dementia by sacrificing Evernight Shade
5. When Evernight Shade dies, its persist ability triggers, returning it from your graveyard to the battlefield with a -1/-1 counter on it.
6. Evernight Shade enters and dies as a state-based action due to having 0 toughness. Its undying ability triggers, returning it from your graveyard to the battlefield with a +1/+1 counter on it.
7. Resolve the Altar of Dementia ability from step 4.
8. Repeat from step 4.

What the combo produces

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