Vaal Orbs are a form of currency in Path of Exile. They are used to modify items, adding the powerful Vaal affixes to them. Vaal Orbs are considered a rare currency item and can be obtained through various means, such as completing certain in-game tasks, trading with other players, or opening certain strongboxes.

Vaal Orbs can be obtained in various ways, such as through drops from monsters, completing certain in-game tasks, trading with other players, or opening certain strongboxes. Vaal Orbs can also be obtained through the use of certain divination cards, such as the ‘The Hoarder' card.

Vaal Orbs are used to corrupt items, adding powerful Vaal affixes to them. The process of corrupting an item with a Vaal Orb is irreversible and can result in powerful, but unpredictable effects. It is also possible for items to be destroyed during the corruption process, leaving behind a Vaal Fragment. Vaal Orbs can also be used to reforge maps, allowing players to reroll the modifiers of a map.