A grim legend from a bygone age, the darkin are living weapons that will eventually corrupt and consume any who attempt to wield them. Once great warriors in their own right, they were deceived and imprisoned within the blades and bows they carried in battle, and hidden away so that they could never threaten the mortal realm again. But amid the cataclysmic events of the Rune Wars, the true origin of the darkin—and the threat they posed to all life on Runeterra—was largely forgotten.

In the centuries since, a handful of these weapons have been rediscovered by the ignorant and the ambitious alike, and have already begun to seek out new, stronger hosts. A reckoning is coming, and the darkin will have their vengeance...