Way of the Dirty Fighter

No trick is too cheap or move too low, the fighting style is a mastery of self through misdirection and an exploitation of the opponent’s weaknesses. Masters of this technical control the battlefield through tactics taking every advantage they can and making advantages when there are none. A match fairly fought is a match already lost. Fight to win, no mercy!

Control the fight

Go for the soft spots!

After using the flurry of blows feat you can choose to engage in a grapple attack for each strike. After completing a successful grapple you can choose one dirty fighting move from below to use:

 

Eye Gouge - make an unarmed attack with advantage against the opponent dealing appropriate damage and blinding them for one round.

Sweep the Leg - make an unarmed attack with advantage against the opponent dealing appropriate damage and knocking them prone while grappled.

Work the tenders - make an unarmed attack with advantage against an opponent that automatically crits if it hits.

Pop the ears - make an unarmed attack with advantage against the opponent dealing appropriate damage and deafening them for one round.

Chop the throat - make an unarmed attack with advantage against the opponent dealing appropriate damage and rendering them speechless for one round.

Counter-attack

At 6th level,  your keen insight into fighting and constant vigilance allows you to add 1 to your passive perception score per level. Able to see attacks coming you can now use your Deflect Missiles ability against melee attacks. If you would reduce a melee attack's damage to 0, instead of catching and making an attack with
the weapon, you may use one of the following moves.

Pants - You pants the opponent reducing their movement by half

Bite - You aim for the nearest tasty morsel and get a chunk dealing 1d4+Str mod piercing damage

 

Adapt and overcome

At level 11 your knowledge of self and the battlefield improves and once per turn as an action you are able to focus your ki to alter yourself and create new opportunities on the battlefield. For an action and 2 ki you can cast reduce/enlarge on self and a bonus action you can use viscous mockery with wisdom as you modifier. 

-2 ki , Reduce/Enlarge

bonus action - vicious mockery

Finish him

At level 17 you have perfected the ability of exploited an opponents weaknesses and are able to turn it into a sweet finishing move. After grappling a single opponent for full round you can spend 3 ki to attempt a finishing move. The grappled enemy must make a con save or its hp is reduced to 0. A successful save the opponent take 10d10 magical dmg