Legendary Creature - Human Advisor

White spells you play cost {1} less to play.
Blue spells you play cost {1} less to play.
Spells your opponents play cost {1} more to play.

The Arbiter is a conduit of justice, a will so disciplined that it dispenses justice without ego or remorse.

Artist(s): Zoltan Boros & Gabor Szikszai