Extraordinary

This feat is created by Nedrapter for use in his Land of Arda campaigns, and are balanced to the hardcore nature of them. 

• Increase one of your ability scores by 1. This increase allows your score to go over 20. 
• You can take this feat multiple times.
• Once per long rest, you can reroll an attack roll, ability check, or saving throw of a score that is higher than 20 (this effect does not stack).