Prerequisite: Strength or Dexterity score of 13 or higher, and unarmed fighting style or at least 1 level in monk.
Untouchable Flurry. When you make at least 3 unarmed strikes in a turn, the next attack against you has disadvantage. If you make at least 5 in a turn, all attacks against you have disadvantage until the start of your next turn, or until there is no hostile enemy within your unarmed strikes reach.
Similarly to the sword style feats I published quite a while ago, these are meant to buff the niche martial subclass of pugilism which my sword styles do not, they follow the same rules of obtainment and advancing ranks.