SOUL CRAWLER

This mob would be found in the nether in the soul sand valley area.
It would be a very fast and cunning quadruped mob.
It would be like a skeleton lizard the size of a wolf.
His head would be covered by a skull of his victims, since this mob is very hostile and cunning. He would also have a purple aura in his mouth and around his body.
Its main attack would be a claw if the player is close, otherwise it would fire a purple van flare that would inflict fire and the wither effect.
It could be tamed if when it opens its mouth to make the flare you make a new item that would be a purple mushroom.
This one could not swim through water but in lava.
Also from time to time I would dig something in the sand of souls.