When the Pokémon enters a battle, it identifies opponents' held items.
Frisk (Japanese: おみとおしUnobstructed Sight) is an Ability introduced in Generation IV.
Effect
In battle
Generations IV and V
Frisk allows the Pokémon to see the opponent's held item upon entering battle. If the foe is holding an item, a message identifying the item will be shown right after the Pokémon with Frisk enters the battle. If the foe is not holding an item, no message will appear.
In a Double or Triple Battle, an unidentified opponent is randomly chosen and its held item revealed. The item revealed may be from a non-adjacent opponent.
Generation VI
Frisk now identifies the held items of all opponents in the order of left to right from the opposing team's perspective.
When the Pokémon uses a move on a foe, it will learn the name of the item the foe is holding.* When it uses a move or attack on a foe, the Pokémon will know the name of the item that foe is carrying.*