Oberon Feyarch

Forestwalk
Whenever an artifact or enchantment an
opponent controls is put into a graveyard from
the battlefield, put a +1/+1 counter on each
creature you control. Whenever an artifact or enchantment is put into an opponent's graveyard
from anywhere other than the battlefield, you
may destroy target artifact or enchantment with
a converted mana cost equal to or less than that
card.