Kitsune True Form

A Kitsune can turn into a fox, you know the spell Polymorph but can only transform into a fox once per short rest, You don't need to sleep but meditate semiconsciously for 4 hours a day. While meditating, you can dream after a fashion; such dreams are actually mental exercises that have become reflexive through years of practice. After resting in this way, you gain the same benefit that a human does from 8 hours of sleep. You still need 8 hours for a long rest.

Also as a kitsune you are born with a single tail, but as you grow older and gain more power you also gain more tails. (every 2 lvl they gain a new tail starting with lvl 3, but the ninth at lvl 20)