Sulfur cave mobs

Another thing I wanted to add to the sulfur cave is the mobs. The only mob is the sulfur cube. I like the mob and see lots of uses for it but one thing that would be amazing to have is adding a heart of the ocean to it and then being ablke to wear the mob on your head for unlimited water breathing or add a dry spong to it and have it go with you to repell water to do mining or building under water a little more easily. Next is the addition to the sulfur caves mobs. They should make the poison spider spawn more naturally in those caves given that sulfur is more toxic and it would be nice to see them more in the open game then just wasted in abandoned mine shafts. Next sulfur skeletons, We've seen all kinds of evolved skeletons in many different biomes but a sulfur skeleton that shoots poisoned arrows of sulfur would be a really cool challenge. Next are sulfur creepers, Creepers are one of the oldest mobs in game that have never evolved like others have but if inside a sulfur cave when they mix in sulfur lakes they become more potent and turn into a purple creeper. A mob that is slightly faster and more explosive then the normal variant. It would be cool to see the creepers get some over due love in evolving. Another mob is acid slime. If a sulfur cube becomes exposed to a sulfur lake with nausea effct in it it becomes the acid slime. a mob that eats away regular stone like silver fish do and not only damages you but degrades your gear a little faster the damage you take.