Keldor snubbed the sword and chose the scepter and when he bathed it in the Power, his evil nature corrupted the power and became infected with Havoc, rotting away the flesh of his left hand and forearm. When Prince Keldor found the Castle and demanded its sorceress, the Eldress, bestow the Power unto him in exchange for the safe release of his abducted nephew, Prince Adam, he was offered to choose one of two totems to wield the Power. Originally, the Staff was a scepter and an artifact related to the mysterious Castle Grayskull.
It appears in the 2021 Netflix series He-Man and the Masters of the Universe. The Havoc Staff is the instrument through which the wicked Skeletor wields the malevolent Power of Havoc.