# Essence Essences are a type of currency item dropped by essence encounters. Essences will add a modifier to an item, guaranteeing a modifier of a specified type. Essences can appear starting from Act 2. ## Mechanics Base tier essences will upgrade normal items to magic items, while Greater essences will upgrade magic items to rare. Using a [[Vaal Orb]] on an imprisoned monster will corrupt it and modify the essences it's holding in unpredictable ways. Outcomes include: - Add a random essence - Reroll all essences into the same type - Upgrade regular essences into their Greater versions - Transform Greater Essences into a Corrupted Essence