the user swings its whole body around to attack with its huge hammer this move can't be used twice in a row

Every other Pokémon on the field.

Gigaton Hammer inflicts damage. The user cannot select Gigaton Hammer in succession unless the move failed. If the player attempts to use Gigaton Hammer twice in a row, they will be prevented from doing so, and will be allowed to select another move. Once another move is used, Gigaton Hammer can be used again