- Lowers damaging Poison-type moves' energy cost by 1%. Makes Hidden Power Poison-type.
A dark purple stone tablet infused with the power of poison. Pokémon holding this item use 1% less energy to use damaging Poison-type attacks. That Pokémon's Hidden Power attack becomes Poison-type for as long as the plate is in its possession. If the plate should be removed, Hidden Power's type is randomized for the remainder of the battle.