Critical Thinking

You can gain Critical thinking point by rolling a natural 20,s on any intelligence , wisdom or charisma skill check. You can have as many Critical thinking points equal to your proficiency bonus. After each long rest minus 1 from your total(minimum 0). These points give you a bonus to all intelligence, wisdom and charisma skill checks. 

You can also spend a point to give you advantage on these checks. You can decide to use it after dice have been rolled but before the outcome has been said. Any 1's rolled normally or using a Critical thinking point on any intelligence , wisdom or charisma skill check cause you to lose points (minimum -1).  If for any reason you are rolling more than 1 dice for this check consider all dice for gaining or losing points.