Praxxus, Pawn of Norn

Creatures your opponents control get -1/-1
Praxxus, Pawn of Norn gets +1/+1 equal to your devotion to Phyrexian White.
As long as your devotion to Phyrexain White is
more than 10, creatures your opponent controls
have -1/-1, and creatures you control get +2/+2.
Non-Artifact cards cost {p/w} more to cast