Phyrexian Altar + Szarel, Genesis Shepherd

BRG identity

Commander legal

The 2 combo pieces

How to execute it

  1. Activate Phyrexian Altar by sacrificing a persist creature without a -1/-1 counter on it.
  2. When the persist creature dies, its persist ability and Szarel trigger.
  3. Resolve the Szarel trigger, putting a number of +1/+1 counters on the other persist creature.
  4. Resolve the perist creature's trigger, returning it from your graveyard to the battlefield with a -1/-1 counter on it.
  5. Repeat.

What the combo produces