Ashnod's Altar + Cayth, Famed Mechanist

URW identity

Commander legal

The 2 combo pieces

What must be in place

The persist creature does not have a -1/-1 counter on it.

How to execute it

  1. Activate Ashnod's Altar by sacrificing the persist creature, adding {C}{C}.
  2. When the persist creature dies, its persist ability triggers, returning it from your graveyard to the battlefield with a -1/-1 counter on it.
  3. When the persist creature enters the battlefield, its fabricate ability triggers, putting a +1/+1 counter on it.
  4. Repeat.

What the combo produces