Green currently has more unbound cards at common than blue. And this is the most vanilla unbound card in green. Might want to replace this one. Or one of the other two (((Under-Leaf Ranger))) and Treefolk Chanter could be replaced, as both give +1/+1 until end of turn which is perhaps too similar.

Another thought is we could use an Unbound green card that actually distributes a +1/+1 counter, to give a bone to the +1/+1 counter theme.

Vote for Under-Leaf-Ranger to be changed. Cute concept, but it kinda goes against the rather aggressive Unbound theme.

Maybe make another Discovery creature? Green so far has only one, and that one may be lifted to UC status anyway.

Good point. We don't want to neglect that green is the primary Discovery color.