Changes

::We liked the idea of the sand being dangerous in D3, and tried to use this monster for that purpose in the sandy desert areas. He's been very tricky to get working properly, and that's got a lot to do with his behavior being too complicated to work smoothly with the speed of Diablo 3.

::The idea is that the Sand Thresher would submerge, but only when he's on the sand. He can't burrow under other surfaces. Also, when he's submerged he's invulnerable. You can only attack him when he's above ground.