Honing your body and mind, you have become a vessle to enact your blade's will. Way of the Reflex fighters understand their weapon of choice with all their being, treating it as if it were a part of them. They channel a razor sharp finesse that carries them accross the battlefield. Using enhanced reactions, you can sway the tides of battle by moving around the battlefield and staying agile even when it's not your turn. 
As a Way of the Reflex fighter, to be an effective killer is to examine the enemy, wait for an opening and release a flurry of strikes when they least expect it. You specialise in reading intentions and sensing enemy's micromovements. You are oftentimes the first to react when any conflict breaks out and you most likely have a plan to correct it. However it goes, you will deal with it with efficiency at the forefront of your mind.

Way of the Reflex fighters have trained the majority of their lives in order to retain a mind free of distraction. If the time comes to react without a moment't notice, you won't spare a single thought before unsheathing your blade and disposing of the threat.

Level 3: Reflexive

At 3rd level, you gain incredible reaction speed, enough to react multiple times in quick sucession. You have a number of reactions equal to your wisdom modifier.

Reflex Dice. You gain a Reflex Dice that you can use to fuel reactions. As a bonus action, roll a Reflex Dice. The number you get is the amount of Reflex you have until your next turn. You can cash in Reflex for enhanced reactions to use in combat until your next turn.
(At 3rd level your Reflex Dice is a d6. At level 7 your Reflex Dice is a d8 and at level 15 your Reflex Dice is a d10.)

Assess. When rolling a Reflex Dice as a bonus action, choose a number of creatures you can see equal to your wisdom modifier. These creatures are tracked. Tracked creatures and Reflex points reset the next time you roll a Reflex Dice or combat ends.

Reactions. You learn three reactions of your choice. Each reaction has a cost associated with the speed of the reaction. Exchange Reflex Points to gain access to a plethora of reactions. Tracked creatures and Reflex points reset the next time you roll a Reflex Dice or combat ends. You learn an additional reaction at 7th, 10th, and 15th level. (You can perform more than one or multiple of the same reactions if you have enough reactions and Reflex points).

 

Deflect

2Reflex | Deflect. Once a tracked enemy makes an attack against you, you can spend a reaction to add your wisdom modifier to your armour class, possibly causing the attack to miss.

Delayed Slash

8Reflex | Delayed Slash. In response to a tracked target moving more than 1ft and if you missed a melee attack against that same creature on your turn, reroll the most recent attack as a reaction. On a sucessful hit, the creature takes the attack's intended damage and cannot move for the rest of their turn. The attack isn't limited by distance to the target and the user can decide to initiate the reaction during or after the creature finishes movement. 

Flash Cut

6Reflex | Flash Cut. As a reaction to an oncoming projectile attack, make a DC10 attack roll agaist the oncoming target. On a hit, you cut the projectile in half.

Line in the Sand

4Reflex | Line in the Sand. Once a tracked creature enters within melee range, make a melee attack as a reaction with your equipped weapon.  

Opportunistic Strike

5Reflex | Opportunistic Strike. In response to an ally attacking a tracked creature within 5ft of you make a melee attack as a reaction with your equipped weapon.

Reposition

2Reflex | Repostition. Once a tracked enemy misses an attack against you, you can choose to spend a reaction to move up to half your movement speed as a disengage reaction.

Level 3: Uncanny Perception

Due to your enchnced senses, you can perceive the mircromovements in a creature's demeanour. As a bonus action or an action you may roll an insight or perception check to discern what a creature will do next. The check must be higher than the creature's charisma score. On a success, you may ask your DM a simple, one sentance question that can be answered with a single word. The answer must be obtainable from the creature's appearance. You could ask one of these simple questions:

• What direction will it move on its turn?
• Will it make a ranged attack next turn?
• Will it make a melee attack next turn?
• Will it perform a spell next turn?
• Does the creature intend to attack?
• Who is the creature focused on?

You may use this feature a number of times equal to your wisdom modifier. You regain all expended uses when you finish a sort or long rest.

 

Level 7: Superior Speed

At 7th level, your physical speed is unmatched both in and out of battle. When moving less than half of your movement speed (even on a reaction) your presance can't be pinned down by creatures and they don't see you leave their sight as you focus on raw speed rather than distance. When taking the dash action and moving half of your total dash speed, you may relocate your character 30ft as a reaction at any point. If you break line of sight with superior speed, you are hidden.

Level 10: Accelerating Onslaught

When making a melee attack against a creature, add 1d4 to your attack damage multiplied by the number of prior melee attacks you have made this turn.

You can use this feture a number of times equal to your wisdom modifier (a minimum of once). You regain all expended uses when you finish a long rest.

Level 15: Invade Attack

Starting at 10th level you can get in the way of enemy attacks against allies you can see. Before the attack roll is made, you can use your reaction to move up to your movement speed within 5ft of the targeted creature. The attack roll that triggered the reaction is instead made against you.

Once you use this feature you can't use it again until you finish a short or long rest.

Level 18: Focused Blitz

at 18th level you have mastered the pinnacle of speed and precision. By using an action, a bonus action, and concentration on your turn, you may give yourself a second turn in initiative order. Roll initiative again, you now have two turns.

This feature ends when you lose concentration. You may use this feature only once per long rest.