Aven, heart of the forest

Hexproof, vigilance, forestwalk, lifelink
This creature has trample as long as it has a +1+1 counter on it.
Every time Aven, heart of the forest attacks put a
+1+1 counter on target creature and create a 5/5
pack wolf with trample and vigilance that is
attacking.
{t}: Add {g}{g}.
Creature's you control have hexproof.