Prodigy of the Garrison

First Strike, Vigilance
Whenever a creature with power 2 or less enters the battlefield under your control, you may pay {1}. If you do, put a +1/+1 counter on it.
Whenever Prodigy of the Garrison deals combat damage to a player, put a +1/+1 counter on each creature you control with a +1/+1 counter on it.