Altar of Dementia + Mikaeus, the Unhallowed + Workhorse

B identity

Commander legal

The 3 combo pieces

How to execute it

  1. Activate Workhorse by removing all +1/+1 counters, adding that many {C}.
  2. Activate Altar of Dementia by sacrificing Workhorse.
  3. Workhorse undying ability triggers, returning it to the battlefield with an additional +1/+1 counter on it.
  4. Resolve the Altar of Dementia ability, causing target player to mill one card.
  5. Repeat.

What the combo produces