Kan-Ra mind controlled the king’s wife to kill him, but he screwed up the mind control spell and she snapped out of it, causing her to leave a suicide note to her husband explaini thing everything that happened.
Kan-Ra then got hit with the curse that makes him…well, Kan-Ra.
Yeah but what about how he ended up slowing the curse and killed the king right after? I mean he did look for arcane spells: control elements, gateways to other worlds/realms & immortality?