Clazath, Depth Caller

+1: Shuffle your hand into your library, then exile the top four cards of your library. You may play those cards this turn.
-3: Target opponent exiles a card from their hand and gets and emblem with "You cannot play cards from exile."
-7: Draw X-3 cards where X is the number of cards in your library. You may cast up to five spells this turn without paying their mana costs.