Morrigu, the Raven Queen

+2: Scry 2. You draw two cards and lose 2 life.
-X: Morrigu becomes a copy of target nonland permanent with mana value X until end of turn. It gains hexproof until end of turn.
-7: Discard your hand then draw seven cards. You may cast up to three spells from your hand this turn without paying their mana cost.