为 闪电谜题 寻找最佳的竞技争锋套牌，包括其胜率、热度，以及该牌在万智牌：竞技场中的合法赛制！
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.
