Messy critical

Whit the blessing from Yondalla 

You have inexplicable luck that seems to kick in at just the right moment but only for you.

• You have 3 luck points. Whenever you make an attack roll, an ability check, or a saving throw, you can spend one luck point to make it a success but not in the way you hope for.
• You regain your expended luck points when you finish a long rest.