Deepstone lurker (trap mob)

This mob would hide in the deep slate block and would be completely stationary with only the top of its gray spikes sticking out of the stone. It will only pop out of its hiding spot if the player walks directly over them. The creature is 3 blocks long and its spikes would be on its back. The creature would spring out at the player always landing a hit at first dealing a base of 10 hearts then it would begin to attack like a normal mob. The Deepstone Lurker would look like a gray alligator with some mod C features from the first mob vote and the creature would have 45 hp and could hide in both Blackstone and stone.