Syndra, Dark Sovereign

+1: Target opponent mills the top 3 cards of his or her library. Syndra, Dark Sovereign deals 2 damage for each instant or sorcery milled that way.
-3: Exile target instant or sorcery from an opponents graveyard. You may cast that card from exile and spend mana as any color.
-8: Exile all graveyards. You may cast any number of instant or sorceries exiled that way without paying their mana costs.