Paying up with sanity

You gain 10 sanity points. When you roll any dice whether it be damage roll, saving throw, or skill check you can choose to spend your sanity points. If you run out of sanity points you can lose 10 hit points to regain 1 sanity point. When you are at zero sanity points you gain disadvantage on all rolls and if you are in combat at the start of your turn make a Wisdom saving throw with a DC of 15 if you fail you must attack your party members.