Takstov, Infiltrator

+1: Look at the top 3 cards of target players library, exile 1 instant or sorcery, put the rest at the bottom of players library.
-X: Cast a copy of instant or sorcery with converted mana cost X that was exiled by Takstov.
-7: Gain emblem: "At the beginning of your turn Takstov may become a copy of planeswalker or creature on the battlefield or any graveyard..."