Swain, Noxian Visionary

{2}, {t}: Swain, Noxian Visionary deals 4 damage
to target creature. If this kills the target, place a
+1/+1 counter on Swain, Noxian Visionary.
Activate only as a sorcery.
Whenever Swain, Noxian Visionary has three or
more +1/+1 counters on it, remove all counters
on Swain, Noxian Visionary, and transform it.
Partner (You can have two commanders if both have partner.)