AmuletOfManyMinions/Charred Spinal Cord

The Charred Spinal Cord is a post-Plantera Hardmode weapon that summons a multi-headed flying skeleton to fight for the player. It is dropped from Hell Armored Bones with a 2.5% drop rate. The summoned chimera will trail behind the player until an enemy comes into range, then fly towards the enemy and attack it by extending its heads. The individual heads behave similarly to Man Eaters. Summoning additional copies of this minion will add more heads, increasing the weapon's damage and attack speed. Like other minions, the summoned chimera is invincible and follow the player for an unlimited amount of time, unless the player dies, summons a replacement minion, or cancels the buff.

Its best modifier is Mythical for the widest array of set bonuses, or Ruthless for the highest damage output.

Trivia
This item's appearance and behavior are based off the Wither from Minecraft. Its drop chance of 2.5% is the same as the drop rate for the Wither Skeleton Skull, an item necessary to summon the Wither.