Wither

The Wither is a powerful undead boss mob in Minecraft, characterized by its three heads and ability to fire explosive wither skulls. It's one of the two bosses in the game (the other being the Ender Dragon) and must be player-constructed to encounter. The Wither’s components originate from the Nether, including soul sand or soul soil and wither skeleton skulls. Upon spawning, it charges up, creates a large explosion, and then attacks nearby entities. It fires two types of skulls: black skulls that inflict damage and the wither effect, and blue skulls that can be deflected. The Wither has substantial health, especially in Bedrock Edition, and unique block-breaking abilities. When its health drops below half, it gains 'wither armor,' making it immune to arrows and tridents. In Bedrock Edition, it also summons wither skeletons. Defeating the Wither grants players a nether star, used for crafting beacons.