Actually, It does work. Look:
Defensive duelist:
W hen you are wielding a finesse weapon with which you are proficient and another creature hits you with a melee attack, you can use your reaction to add your proficiency bonus to your AC for that attack, potentially causing the attack to miss...
Don't forget you still get half the damage that a pure fighter would suffer, and a +2 dmg.
You delay one level to get an extra atack to become almost invencible on str checks that you'd already have to do anyways, plus all this bonuses I Said before.
Seems pretty awesome to me.
But i have to...
I looked for, but haven´t found this build yet. So I´d like to see your opinion.
I think it´s the most versatile build for a fighter.
It´s a human fighter, wearing medium armour and a rapier (finesse weapon).
level 1 Fighter
- Dueling style (+2dmg)
- Shield master (bonus action...