Originally Posted by bronislav84
So then there are other special Ground moves that Hydregion can learn? This is really hard.
Earth Power is the only Special Ground type move that Hydreigon gets. It also gets Bulldoze and Earthquake, but those are Physical. There are other Special Ground moves like Mud Shot, but those are both weak, and unable to be taught to Hydreigon. If you insisted on using a Ground and a Dark type moves, I'd go for Earth Power/Crunch, or Earthquake/Dark Pulse, since there is no other way you can fit in both.