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A Celestine is a spirit of unfathomable power, just under Gaia and the Triat themselves. The most prominent are Luna, the spirit of the moon, and Helios, the spirit of the sun, but there are different Celestines,some are avatars of a member of the Triat, others are ancient spirits that humanity used to worship. Most have areas in the Umbra that are their personal domains and that they seldom leave.
Because their true form is unimaginable, a Celestine who wants to communicate with a Garou usually sends spirit emissaries or manifest an avatar for personal communication.