hmmm...good catch.
1 - Fist of Stone OR Hail of Stone
2 - Soften Earth and Stone OR Earthen Grasp
3 - Stone Shape
4 - Spike Stones OR Earth Hammer
5 - Wall of Stone
6 - Move Earth
7 - Earthquake
8 - Master Earth OR Repel Stone OR Stone Wrack
9 - Elemental Swarm
I mistyped, it should be Master Earth at 8th level.
Earth Hammer creates of magical hammer of Elemental Earth that you can attack with for good effect and damage.