However, you can get the following items in Platinum which are similar in functionality:
* Draco Plate: This plate can be obtained in the Victory Road, after defeating Cynthia, and used to teach a Pokémon the Draco Meteor move.
* Earth Plate: You can find this plate in the Stark Mountain and it can be used to teach a Pokémon the Earth Power move.
* Sky Plate: You can find this plate in the Wayward Cave and it can be used to teach a Pokémon the Sky Attack move.
These plates have similar effects to the Splash Plate, but they are specific to certain types of Pokémon. If you're looking for a way to boost your Pokémon's power, these plates are a great alternative.