“The Wither is a floating three-headed hostile mob with a skeletal appearance. It is the second boss mob, introduced in Minecraft during the Pretty Scary Update. It is Minecraft’s first player-created mob to be hostile to all living mobs and the player, and is so far exclusive to the PC version.”
The Wither needs to be manually spawned using 4 blocks of Soul Sand and 3 Wither Skeleton Heads. Place the Soul Sand in a T shape
The Wither is hostile towards the player as well as all mobs, except undead mobs (Skeletons, Zombies, Zombie Pigmen, Wither Skeletons and other Withers). The Wither will shoot Wither Skulls, similar to Ghasts’ Fireballs. They move slowly and inflict an effect called “Wither”, which is also inflicted by Wither Skeletons, making your health bar black (so you won’t know how much health you have left) and slowly inflicting damage similar to Poison. The purple bar at the top of the screen resembles the health of the Wither.
A very easy method is to spawn him, push his head in a bedrock ceiling in the Nether, then kill him. You will only need a sword, lever, and piston.
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