Mob and Item/Block

New Snail Mob that leaves a sludge trail behind it, with the sludge stuff it leaves behind you can use something to pick it up and can craft a sludge block with 4 sludge. when u place the sludge block it will be normal speed when walking over it but if u used 4 sludge blocks to craft a different sludge block (kinda how ice works) you can then walk faster. there will be 4 different types of sludge blocks that increase movement speed more and more just like ice, packed ice, blue ice, but what makes it different is it also has bounce like jumping on a slime block but the bounce height is based on how fast you are moving. Also maybe when u jump off the sludge blocks your feet are temp covered in sludge meaning it will remove fall damage for 1 fall. sludge block will be pale colour. you can feed it normal slime balls to breed them, baby snails will have no shell. when breaking certain blocks it will have a small chance in spawning a snail. you can also pick up the snail maybe in a bucket.