Sword master

A master swordsman who can fully harness the offensive and defensive potential of their swords

Parry

Beginning when you choose this subclass at 3rd level, while you are not wearing any armor, and wield a weapon that deals slashing damage, you gain additional AC. The AC bonus is +2 for each light weapon; otherwise +4 for a weapon wielded in one hand or +5 for a weapon wielded in two hands. If you are wielding a magic weapon that grants you a bonus to attack rolls, your Armor Class increases by the same value.

Dash Strike

Starting at 7th level, when you take the Dash action, you may make a single attack if you stop within reach of an enemy creature.

Charging strike

From 10th level onwards, when you dash and make an attack you deal an 2d6 additional slashing damage that increases by 1d6 when you reach 15th level (3d6), 18th level (4d6) on hitting and attempt to knock the target prone on the first strike with a Strength saving throw DC of 8 + your proficiency bonus + the weapon bonus granted to you by your Parry feature.

Blade rageing charge

Starting at 15th level, you gain the following benefits:

• You can attack any enemy in your way once while dashing, if you miss the attack, you then can be hit with an opportunity attack. If you stop next to an enemy, you can attack it normally with the previous knock back and damage bonus.
• You can double your dash speed once per short or long rest. (If you have a 30ft speed and dash for 60ft normally, you can do a 120ft dashing, for an example)

Wind blast

From 18th level onwards, if you are wielding a weapon that deals slashing damage, you can use your bonus action to create a blast of wind. Creatures in a 15 foot cone must make a Strength saving throw. The DC is 8 + your proficiency bonus + the weapon bonus granted to you by your protective blade feature. On a failed saving throw, a target takes 6d10 bludgeoning damage and is knocked prone, or half as that damage if succeed. You can use this feature 3 times before finishing a long rest. Each short rest recovers 1 use.