"It does not react to any of your standard unlocking spells."My first thought was my character asking the doors gently to open, then trying to use classic magical words.
Hahahaha
Archmage: "Would you please unlock?"
The door: does nothing
Archmage: "Pretty please?"
Archmage: "Alohamora? Abra cadabra? Open sesame? Hmm. Well I'm out of ideas."
Exactly like that lol
๐๐๐๐๐
Luna: "Ali-open!"
The door: doesn't do squat