Riddle of Lightning [Future Sight]

Set: Future Sight Type: Instant Common Cost: {3}{R}{R} Choose any target. Scry 3, then reveal the top card of your library. Riddle of Lightning deals damage equal to that card's converted mana cost to that permanent or player. (To scry 3, look at the top three cards of your library, then put any number of them on the bottom of your library and the rest on top in any order.)