In battle, you may wish to temporarily boost your Pokémon's stats. This can be done by using the below items, which each boost the Pokémon's stats while they are in battle. These items are all one-use only but you can find them in a variety of places.

Picture	Name	Effect
	Aux Evasion	An item that makes moves less likely to strike a Pokémon in battle. This effect disappears if the Pokémon leaves the battle.
	Aux Guard	An item that sharply boosts the defensive stats of a Pokémon in battle. These effects disappear if the Pokémon leaves the battle.
	Aux Power	An item that sharply boosts the offensive stats of a Pokémon in battle. These effects disappear if the Pokémon leaves the battle.
	Aux Powerguard	An item that sharply boosts the offensive and defensive stats of a Pokémon in battle. These effects disappear if the Pokémon leaves the battle.
	Choice Dumpling	A dumpling that will make a Pokémon become fixated on a move in battle. The Pokémon will deal more damage when using that move but will take more damage as well.
	Dire Hit	An item that can be used once to sharply boost the critical-hit ratio of a Pokémon in battle. This effect disappears if the Pokémon leaves the battle.
	Dire Hit	An item that sharply boosts the critical-hit ratio of a Pokémon in battle. This effect disappears if the Pokémon leaves the battle.
	Guard Spec.	An item that prevents Pokémon on your side from having their stats lowered in battle for five turns.
	Mysterious Balm	A mysterious balm to be used when battling Arceus.
	Roto Boost	One of the Rotom Powers. When used, it boosts all stats for your battling Pokémon.
	Space Balm	A mysterious balm that somehow has the power to calm Palkia in its frenzy.
	Swap Snack	When eaten, this curious snack temporarily swaps a Pokémon's offensive stats with its defensive stats.
	Time Balm	A mysterious balm that somehow has the power to calm Dialga in its frenzy.
	Twice-Spiced Radish	These pickled vegetables prime a Pokémon for battle. The Pokémon takes a hard-hitting stance, which boosts the damage dealt by its moves by 50 percent.
	X Accuracy	An item that sharply boosts a Pokémon's accuracy in battle. This effect disappears if the Pokémon leaves the battle.
	X Attack	An item that sharply boosts the Attack stat of a Pokémon in battle. This effect disappears if the Pokémon leaves the battle.
	X Defense	An item that sharply boosts the Defense stat of a Pokémon in battle. This effect disappears if the Pokémon leaves the battle.
	X Sp. Atk	An item that sharply boosts the Sp. Atk stat of a Pokémon in battle. This effect disappears if the Pokémon leaves the battle.
	X Sp. Def	An item that sharply boosts the Sp. Def stat of a Pokémon in battle. This effect disappears if the Pokémon leaves the battle.
	X Speed	An item that sharply boosts the Speed stat of a Pokémon in battle. This effect disappears if the Pokémon leaves the battle.