Dueler

After extensive melee combat training, a person becomes adept at countering the melee attacks of their enemies. As a reaction, if an enemy melee attacks you then you can counter attack with a melee weapon you are proficient in by rolling a STR or DEX check depending on the weapon (if it is a finesse weapon you can choose which stat to use) (the enemy also makes this check but at disadvantage) If you roll lower than the enemy then they attack as normal, but if you get the higher roll then the enemy's melee attack fails and you hit them with the weapon you counter attacked with.