restrictions must have a d4 unarmed dmg not by natural weapon, must not be wielding a weapon, str13 or dex13

1st level gain four KI points and the flurry of blows skill, regain Ki on short,long rest

2nd level gain 2 battlemaster dice and 2 maneuvers, regain dice on short, long rest

3rd level add your proficiency bonus to your unarmed damage, if you have this already double the proficiency bonus

4th level your unarmed damage becomes force damage and add a d4 force damage to unarmed attacks

5th level and beyond choose 1 of these. increase stat maximum  by 1 and stat by 1 con,str,dex