Ashnod's Altar + 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 Ashnod's Altar by sacrificing the additional creature, adding {C}{C}.
  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. Repeat.

What the combo produces