The Grattheos' talisman, also called the Gratios talisman, is a recurring item in the Ys series that allows the user to breath underwater. First appearing in Ys: The Ark of Napishtim, the Grattheos talisman returned with the same functionality in Ys Seven. The term Gratios was used in Ys VI but was renamed to Grattheos later. Both terms refer to the same deity in Ys.

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