Oak Guardian

Last strike, vigilance, ({t}: Add {g}.)
Whenever a forest you control would be put into
the graveyard from anywhere, put a +1/+1
counter on Oak Guardian.
Suspend 3—{g}{g} (Rather than cast this card from
your hand, you may pay {g}{g} and exile it with 3 time counters on it. At the beginning of your upkeep,
remove a time counter. When the last is removed, cast
it without paying its mana cost.)