Wither Skeleton

Wither skeletons are dangerous hostile mobs that only spawn in the nether fortresses.

Wither Skeletons spawn in nether fortresses in a light level of 7 or low. they have a 80% chance of spawning instead of a normal skeletons which means there is a 80% chance a skeleton in the nether is a wither skeleton (pushing a skeleton through a portal works also the same 80% chance is there even if spawned by spawn eggs)

Wither skeletons are just over 2.5 blocks  in height and need a 3 block space vertically to spawn

Wither skeletons drop 0-1 coal and 0-2 bones. They have a 2.5% chance of dropping their skull when killed by the player (or tamed wolf), 3.5% with Looting I, 4.5% with Looting II, and 5.5% with Looting III. If the wither skeleton is killed by a charged creeper's explosion, they will always drop their skull (provided that the two mobs encounter each other). They may also rarely drop their stone sword, which will usually be badly damaged, and may be enchanted. They drop 5 experience when killed by a player or tamed wolf.

Wither skeletons sprint and attack with a stone sword. When the player is attacked by a wither skeleton, they are inflicted with the 
Wither I effect for 10 seconds, which turns the health bar black and decreases the health gradually. Wither skeletons deal 4 on Easy, 7 on Normal and 10 on Hard.


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