I do believe you could use a Ground/Rock type Rhydon with Earthquake, Rockslide, Body Slam and one of your choice.
You could also be in use of a Ghost type maybe Gengar with Hypnosis, Dream Eater, Shadow Punch, and Shadow Ball. Only my opinion.
Best you should go for is a main Psychic Alakazam with Psychic, Recover, and Hidden Power. Hypno Psychic, Shadow Ball, Brick Break/Calm Mind, and Hypnosis, Jynx with Ice Beam, Sing, Body Slam, Psychic.
If you wanna go strict ground Sandslash with Toxic, Earthquake, Rockslide, and Hyper Beam.
I also agree with Neon with Dragonite he needs Dragon Claw, Blizzard, and Hyper Beam at least.