The wither is immune to fire, lava, drowning damage, and freezing. The wither has the greatest natural health of all mobs in Minecraft (exceeded by the warden in Java Edition 1.19, while Bedrock Edition's wither still has the highest health), at 300 × 150 in Java Edition or 600 × 300 in Bedrock Edition. After this, the wither attacks nearby mobs and can take damage. It is accompanied by a loud gruesome sound that can be heard equally from across the map and in all dimensions‌. This explosion has a blast power of 7, more than that of a charged creeper or an end crystal. When this state ends (after 11 seconds), the wither creates a large explosion centered on itself, destroying nearby blocks and dealing up to 68 × 34 damage to nearby mobs/players, depending on difficulty. While in this state, the wither is invulnerable, and neither moves nor attacks. When spawned, the wither grows larger in size as its health bar fills up. The difference between the ender dragon's boss bar and that of the wither.‌ A wither also drops 50 when killed by a player or a tamed wolf. The Looting enchantment does not increase this drop. In Java Edition it can also be destroyed by a falling anvil. It cannot be destroyed by explosions, although it can be destroyed by a cactus, fire, or lava. In Java Edition the dropped nether star takes ten minutes to despawn, though in Bedrock Edition the nether star never despawns. The wither always drops one nether star upon death. Building the wither spawning structure in Peaceful difficulty does not spawn anything. Like all other hostile mobs, the wither despawns when the difficulty is changed to Peaceful. When the wither has successfully spawned, it is angered and creates an explosion around itself.

The building pattern can have any orientation (including horizontal and upside-down) as well as the skulls the wither always spawns at the foot of the pattern. Air blocks are required on either side of the base soul sand or soul soil under the upper blocks (non-solid blocks such as grass and flowers prevent the wither from spawning). The last block placed must be one of the three skulls and can be placed by the player or a dispenser. The wither is spawned by placing 4 blocks of soul sand and/or soul soil in a T shape (see image on the right in the 'Behavior' section), and putting 3 wither skeleton skulls on top of the three upper blocks. Wither when spawned with its blue shield. Soul soil can be used interchangeably with soul sand.

Minecraft dead space armor