Ashnod's Altar + Harvester of Souls + Olivia, Mobilized for War

BR identity

Commander legal

The 3 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, it and Harvester of Souls trigger.
  3. Resolve the Harvester of Souls trigger, causing you to draw a card.
  4. Resolve the persist creature's trigger, returning it from your graveyard to the battlefield with a -1/-1 counter on it.
  5. When the persist creature enters the battlefield, Olivia triggers, putting a +1/+1 counter on the persist creature and causing you to discard a card.
  6. Repeat.

What the combo produces