Selune is a Deity in Baldur's Gate 3. Deities are worshiped all along Faerûn, and one must be selected once you create a Cleric. Deities impact how NPCs react to your character and how some events may unfold differently based on the God you worship. There is no other gameplay implication depending on the Deity chosen.
The Lady of Silver presides over the moon, stars, and navigation. Her power over the heavens is constantly challenged by her sister Shar, who seeks to plunge the world into eternal shadow.
Selune Tips & Notes