The moves are good, but I would save the stalagtite / stalagmite moves for someone else, like that horrid creation called Frost.
For Tremor, I think I would like to see him have the ability to use different sand elements.
I do like the Rock Wave and Earth Blast moves that you put there, but some of the other elements seem a little too similar to Sub-Zero and Jax.
They're not bad, they just could use a few changes.
I'll try to think of some tuff too, and get back with you on that.
By the way, what program are you using to do those stick drawings?