All Hail Kyogre!!!. Primal Groudon has a 4x weakness to water, and Water Spout is the most powerful water-type move in the game. Groudon sucks.. l at I tut etes All Hail Kyogre!!! Primal Groudon has a 4x weakness to water and Water Spout is the most powerful water-type move in game sucks l at I tut etes