Elemental Mastery + Nurturing Presence + Barrenton Medic

Elemental Mastery

Nurturing Presence

Barrenton Medic

How it works

1. Activate Barrenton Medic by tapping it, creating at least one 1/1 Elemental creature token with haste.
2. When the Elemental token(s) enter the battlefield, Barrenton Medic triggers that many times, giving it +1/+1 until end of turn for each creature that entered the battlefield.
3. Activate Barrenton Medic by putting a -1/-1 counter on it, untapping it.
4. Repeat.
5. If Barrenton Medic has a power of two or greater, it also becomes infinitely large until end of turn.