Rhystic Lightning deals 4 damage to any target unless that permanent's controller or that player pays {2}. If they do, Rhystic Lightning deals 2 damage to the permanent or player.
"If wisdom is a river, then we cup our hands, reach in, and drink from it in sips. The kami, however, are like fish, swimming, breathing, surrounded in its presence." —Dosan the Falling Leaf
Choose any target. Scry 3, then reveal the top card of your library. Riddle of Lightning deals damage equal to that card's mana value to that permanent or player.