
A "gamebreaking" League of Legends bug ruined the game's testing server by allowing players to cast their most powerful abilities on never-ending loops.
League of Legends' Public Beta Environment (PBE) is the game's testing server, and it's currently filled with all of the new items that will be making their way to the game with the new season in January. One of those new items is Experimental Hexplate, which grants its owner some extra HP and some physical damage-related stats, as well as 30 Ability Haste (League of Legends' term for cooldown reduction) on their ultimate ability.