Mob-wither skeleton

Wither skeletons spawn in the nether and are basicly a nether version of skeleton. Wither skeletons only spawn in the nether and unlike skeletons, they are fireproof. They also carry a stone sword.

How to kill
Just kill it with a sword

Drops
Wither skeletons occaisonly drop wither skeleton heads, coal, there stone swords,bones and they drop 5 exp

Trivia
They occaisionly spawn on spiders to make a wither spider jockey.

If they hit you with there sword it infects you with the wither and constantly hits you for 10 sec.