Thief (move)

Thief is a -type physical move that deals damage and steals the target's helditem. It is TM46 and is obtained from a quest in Crestlight City.

Effect
Thief inflicts damage and steals the target's held item (if it has one). An item cannot be stolen if the target has the  Ability or the user is already holding an item. If Thief causes either Pokémon to faint, the item won't be stolen.