Barrenton Medic + Cathars' Crusade + Hapatra, Vizier of Poisons

WBG identity

Commander legal

The 3 combo pieces

What must be in place

Barrenton Medic does not have summoning sickness.
Barrenton Medic has less than three -1/-1 counters on it.
It is your turn.

How to execute it

  1. Activate Barrenton Medic by tapping it, preventing the next one damage dealt to it this turn.
  2. Activate Barrenton Medic's second ability by putting a -1/-1 counter on it, untapping it.
  3. Hapatra triggers, creating a 1/1 Snake creature token.
  4. The Snake enters the battlefield, triggering Cathars' Crusade, putting a +1/+1 counter on each creature you control.
  5. Repeat.

What the combo produces