Base Class: Rogue
You've learned how to be nimble rather than a tank, dodging out of the way of attacks and following up on your own and want to master these techniques to gain the upper hand in combat.
Quick Feet
When you choose this archetype at 3rd level, you gain proficiency in acrobatics and athletics.
Chaining Strike
On your turn, if you deliver the final blow to a creature with a finesse or ranged weapon, you can dash in the blink of an eye to another creature within a range equal to your movement speed and perform a free attack against it, potentially causing this feature to activate again. This movement doesn't provoke opportunity attack.
Additionally, the initial dash towards the creature does 1d8 force damage. This number increases as you gain levels in this class, becoming 2d8 at level 9, 3d8 at level 13, and 4d8 at level 17.
Reflect Projectile
Starting at 9th level, you can use your own weapon to deflect an enemies projectile back at them. When a hostile creature makes a ranged weapon attack against you and you are wielding a finesse weapon, you can use your reaction to make a DC 16 Dexterity saving throw. On a success, the projectile fired is repelled back at the creature who fired it, taking the damage they rolled regardless of their AC. On a failure, your reaction is still used to no effect.
The DC required lowers as you gain levels in the class, becoming DC 14 (level 13) and DC 12 (level 17).
Quicker Feet
By 13th level, you have naturally improved through your travels, you are visibly nimbler than most and can react faster. You gain a +4 to initiative rolls as well as an extra 10ft of movement speed.
Like the Wind
When you reach 17th level, you have mastered your the dashes of a swift blade and have optimised their usefulness against an opponent. Any creature effected by the dash granted by the Chaining Strike feature must make a DC 10 Strength saving throw or be knocked prone.
As well as this, any projectile reflected by this subclasses' 9th level feature can be directed at any creature in range of the original weapons range.
Finally, your Dexterity score increases by 2. Your maximum for that score is now 22.