Super Critical

This feat makes critical hits you deal much more deadly on top of normal critical strike damage you also must roll a 1d10 when making a critical strike and one of the following conditions affects the target:

1: blinded and deafened 

2:charmed (intimidated)

3:takes max damage plus 4X rolled damage

4:knocked prone and takes +3d4 bludgeoning damage

5: knocked unconscious for 1d4 turns

6: becomes vulnerable to all damage for 1d8 turns and AC goes down by 5

7:  a piece of brain is now out of order, roll on long term madness

8: stunned for 1d4 turns

9: sever a limb from the body giving disadvantage on all later attacks

10: blood sprays out (exhaustion level 5)