Cinderhaze Wretch + Mikaeus, the Unhallowed + Phyrexian Altar

B identity

Commander legal

The 3 combo pieces

How to execute it

  1. Activate Phyrexian Altar by sacrificing Cinderhaze Wretch, adding one mana of any color.
  2. Cinderhaze Wretch dies, triggering its undying ability, returning it from your graveyard to the battlefield with a +1/+1 counter on it.
  3. Activate Cinderhaze Wretch's second ability by putting a -1/-1 counter on it, untapping it.
  4. Repeat.

What the combo produces