wow, these are pretty great. The only problems I have are in the first one, how the rock sorta flops up infront before sorta snapping (no real feeling of force to it) and how the sword isn't hidden in the ground

Insane effect!!!!

Wow! These are amazing.
I second what Creepin_Bro said. Apart from that, in the second one I think the drizzle effect should be delayed, at least by a second, so that it gives us a feel of the water actually jumping up to a height and dropping again due to the force applied on it.
That tornado's my fav! lol the last one.