Acid Downpour (Special) is a Poison-type Z-Move that is generated when a Pokémon uses the Z-Crystal "Poisonium Z" in conjunction with a special Poison-type move. The power of Acid Downpour depends on the base move it is derived from, resulting in varying strengths. As a Z-Move, Acid Downpour always hits its target, having perfect accuracy. It is designed to deliver a powerful, single-use attack that can break through defensive setups in battle. Acid Downpour does not have secondary effects but is particularly valuable for its capability to turn the tide by leveraging the base special move's power boost. This move can only be used once per battle and after its usage, the Poisonium Z crystal is consumed for the remainder of the battle.