Gryff, Unpopular Gamer

When Gryff enters the battlefield, create a
colorless artifact token called "GBA". It has "{1}, {t}: Add {r} or {w}."
Sacrifice this creature: Target creature you
control gains protection from a color of your
choice until end of turn.
Whenever you cast an artifact creature card, you
may pay {1}{w}{w}. If you do, transform this card.