Once you return the artifact to the Nocturnal Shrine, you'll get the Skeleton Key as a reward. It will never break no matter how many locks you pick, and you'll have a permanent Fortify Security ...

The Skeleton Key is an unbreakable Daedric artifact in Oblivion Remastered, and is one of the best artifacts to hunt down because it boosts your Security Skill and lets you open any lock in the ...

The Skeleton Key replaces your lockpicks, giving you infinite attempts to crack open locks. The item also gives you a flat +40 bonus to Security so all your lockpick attempts will be easier than ever.

With the Oblivion Skeleton Key in your inventory, there quite literally isn't a lock in the land that can withstand a few flicks of your wrist, so get out there and make a ton of Oblivion gold fast.