You have (near) complete control over your own need for sleep, letting you go to sleep whenever you choose and sleep for exactly how long you want. You also gain the ability to dream whatever you wish and interact with it as a perfect lucid dreamer.

You will always feel tired like you didn't get enough rest no matter how much you've slept, and you must sleep a minimum of 9 hour per day. If you have not slept the amount 24 hours since your last rest, you immediately fall asleep and cannot wake until you have finished the minium time remaining for the day.