Erza, Scarlet Paladin

+3: Search your library or graveyard for an Equipment card, reveal it, then put it into your hand. Then shuffle your library.
0: Until end of turn, Erza, Scarlet Paladin becomes a 4/4 Human Knight creature with Double Strike that's still a Planeswalker.
-9: You get an emblem with "As long as you control Erza, Scarlet Paladin, you may pay {0} rather than pay Equip costs."