Originally Posted by Qwertystop
Subset? No. While it might sort of fit, Autohypnosis is good enough as a utility skill as-is without adding more.
Defeating a Nightmare? That's a good use. How should I scale the DC to the caster level, do you think?
"You may use your Lucid Dreaming skill in place of a will save against any effect that can only be cast on you while you are sleeping"?