Altar of Dementia + Mikaeus, the Unhallowed + Restless Apparition

WB identity

Commander legal

The 3 combo pieces

• Altar of Dementia
• Mikaeus, the Unhallowed
• Restless Apparition

How to execute it

1. Activate Altar of Dementia by sacrificing Restless Apparition.
2. When Restless Apparition dies, its persist 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 Restless Apparition.
5. When Restless Apparition dies, its undying ability triggers, returning it from your graveyard to the battlefield with a +1/+1 counter on it.
6. Resolve the Altar of Dementia ability.
7. Repeat.

What the combo produces

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