Grim Haruspex + Olivia, Mobilized for War + Yahenni, Undying Partisan

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 Yahenni by sacrificing the persist creature.
  2. When the persist creature dies, it and Grim Haruspex trigger.
  3. Resolve the Grim Haruspex 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. Resolve the Yahenni ability.
  7. Repeat.

What the combo produces