Zheva, Veiled Agent

+2: You may draw a card. If you do, discard a card.
0: Until your next turn, Zheva becomes a copy of a creature card in a graveyard with indestructible that's still a planeswalker. Prevent all damage.
-8: You get an emblem with:"You may play cards from your graveyard. If you do, if it would go to the graveyard, exile it instead."