worldbreaker (warhammer 40k)
Worldbreaker was the mighty Power Maul and infamous personal weapon of the Warmaster Horus Lupercal during the Great Crusade and Horus Heresy eras of the late 30th and early 31st Millennia.
It was personally crafted and presented to him as a gift by the Emperor of Mankind when he was named as the Imperial Warmaster and charged with leading the Great Crusade as the Emperor's proxy following the Ullanor Crusade.