Altar of Dementia + Mikaeus, the Unhallowed + Solemnity

WB identity

Commander legal

The 3 combo pieces

What must be in place

You control at least one additional nontoken, non-Human creature that does not have a +1/+1 counter on it.

How to execute it

  1. Activate Altar of Dementia by sacrificing the additional creature.
  2. When the creature dies, its undying ability triggers, returning it to the battlefield from your graveyard with zero +1/+1 counters due to Solemnity.
  3. Resolve the Altar of Dementia ability from step 1, causing target player to mill cards equal to the sacrificed creature's power.
  4. Repeat.

What the combo produces