+6hit in level 60 knight is not a great deal, because level 60 knight, should hit at 100% almost anything in the game. Maybe add some +dmg or some special skill. It's called bounce attack, a chance to unequip enemy weapon or just easy a chance to slow or stun.
Imagine a real sword fight you hit the enemy shield, your weapon bounce, what can happens:
A) you lost your grip: your accuracy goes down or if its a total loss your weapon goes to ground. Translated to game: -xx hit or unequip enemy weapon (how works this on pve???? Chance to wb??)
B) your combat posture is broken, your next attack will be throw from a non correct posture so it will be a slow attack you need step back, to regain your position to attack again. Translated to game: 1) chance to slow the enemy for a brief moment 2) chance move the enemy 1 step back - this is tricky because I know it can generate a problem in game and it's not good because makes the knight move to hit again the enemy.
C) worst situation: you hit the enemy shield your weapon bounce and hitted yourself. It can damage or bash your head. Translated to game:
- chance to nullify the enemy attack and damage the enemy with his own damage. Similar to cb.
- chance to nullify enemy attack and stun the enemy.
So as you can see they are few solutions to make bounce attack an interesting skill. Specially taking in consideration you need level 60 to use it.
I hope this ideas help @Mephi and everyone.