Would {dryad arbor} and {bow of Nylea} boost goyf by 2 each if you got them into you graveyard with something like {drowned in filth}?
I guess another question is...if you got them both in at the same time with it, would his power and toughness go up by 5?
Yes. It's the same same reason that {Tarfire} boosts. It's two different card types