Creeper Egg

The Creeper Egg is a Hardmode summoning item that gives the player a Flickerwick light pet. It is dropped by the Ogre during the Old One's Army event. When active, it is similar to the Wisp in a Bottle, where it provides light where ever you go. The summoned Flickerwick has the same movement speed as the player, and cannot be left behind easily. this item also shares the same name with the egg of a very popular creature in minecraft

History
Kriecherei Œuf de Creeper 크리퍼의 알 飞眼怪蛋