Sneaky Thornamite

Frantic (As you cast this spell, you may exile up to
X cards from the top of your library, where X is the
amount of generic mana in this spell's mana value.
This spell costs {1} less for each card exiled this way.)
{2}{r/g}, {t}: Exile the top 3 cards of your library.
For each non-creature card exiled this way, other
creatures you control gain +0/+1 until end of
turn.