I need help with puzzles for a moon themed dungeon

My player is a Cleric of Selune and has played Baldur's Gate 3 so I feel the moon puzzle in that one is too obvious. I'm running Wild Beyond the Witchlight.

In overarching themes, her character is cursed with lycanthropy. Selune is a goddess of lycanthropy, as the moon celebrates transformation with its changing phases, so I would like to lean into that. I am also planning the concept that werewolves are a corrupted transformation rite, and its pure form is not unlike Wildshape, which began in the feywild. My campaign will end in the Shadowfell, with them finding the source of the corruption (The Caller) to end the curse once and for all.

I am planning for the final room of this dungeon to use the encounter from the book. (The Astronomer's Throne for those curious.) But if you have ideas for puzzles with shape-shifting, celestial bodies, or even Selune herself, I would be very grateful to hear them.