Pinkymod/Plague Skull

The Plague Skull is a Hardmode found in the Corruption. It floats towards the player until it is nearby, after which it remains stationary while firing plague orbs that inflict Cursed Inferno and Poisoned.

Bestiary Entry
Foul spawn of the corrupt lands. These sentient skulls known as Plague Skulls hold potent poisons and darkness within their hollow heads. When engaging them, be prepared for the horrible effects that might come after taking a hit. Moreover, some adventurers have reported that the skulls would whisper dreadful things in a incomprehensible language, and while us Terrarians cannot understand what they are saying, it still inflicts upon us a deep sense of terror. Why these

skulls came about and why they are serving the corruption is not known, as they seem too complex to be a mere mutation of corrupt flesh like Eaters of Souls. Then again, not many would want to study something that eats your sanity away the longer you linger near it.