Fecundity + Olivia, Mobilized for War + Phyrexian Altar

BRG 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 Phyrexian Altar by sacrificing the persist creature, adding one mana of any color.
  2. When the persist creature dies, it and Fecundity trigger.
  3. Resolve the Fecundity 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