(So, for the sake of this article, when I mention AP champions I am generalizing them as ranged and ability reliant, as that is their majority.) AP champions take runes like Electrocute if they want to burst down enemies quickly or Arcane Comet to bully enemies in lane with long ranged abilities. When League of Legends players think of AP champions, most think of spellcasters like Ryze, Cassiopeia, and Xerath, who rely on their abilities more than an AD champion (who relies more on their auto attacks).