Robin, Amnesiac Tactician

+2: Exile cards from the top of your library until you reveal a nonland. You may cast that spell this turn. It gains cascade until end of turn.
-3: Up to two target instant and/or sorcery spells in your graveyard gain retrace until end of turn.
-12: You get an emblem with "You may cast cards you own from outside the game without paying their mana costs."