TerrariaItemsConsumableMechanical SkullItemsMechanical SkullSummons Skeletron PrimeFavoritesPlan craftingCopy linkSave imageConsumableNo valueResearch required3Maximum stack9,999Crafting recipes 1Mechanical Skull×1Used in 1Ocram's Razor×1Achievements 1Like a BossObtain a boss-summoning item.Changed in seeds 1ZenithWorld seed optionFor the Worthy wasn’t enough? Featuring aspects of every other world seed combined with some brand new surprises, this world is here to break you. Get fixed, boi!In progress