>>27376736This move is an increased priority move. If a Pokémon affected by Powder attempts to use a Fire-type move during that turn, they take damage equal to 25% of their maximum HP and cannot execute the move (PP is still consumed).
Powder will damage the Pokémon even during heavy rain. If a Pokémon with Magic Guard affected by Powder attempts to use a Fire-type move, it will fail to execute the move but take no damage.
Powder does not prevent a Pokémon from thawing itself by using a move like Flame Wheel. If a Pokémon affected by Powder attempts to use Natural Gift while holding a Berry that makes the move Fire-type, the Pokémon takes damage from Powder but the Berry is not consumed.
Grass-type Pokémon, Pokémon with Overcoat, and Pokémon holding the Safety Goggles are immune to Powder.