Skull Necklace

The Skull Necklace is a gold chain with a small skull charm hanging from it. It is worn by the Apocalypse boss Espylacopa and there is a small chance she will drop it.

The Skull Necklace provides 10 extra defense and causes all types of skeletons (Skeleton, Angry Bones, Cursed Skull, Dark Caster, Dragon Skull, Tim, Undead Viking, Skeletron, Skeletron Prime, Skeletron Mech, etc.) to become passive when worn, even if you attack them. This can be extremely helpful when fighting skeleton-based bosses, such as Skeletron, Skeletron Prime, and Skeletron Mech (although all three must be defeated in order to obtain the necklace in the first place).