Indomitable Slayer

Hard to see... quick of hand... in your face deadly! The indomitable slayer is less an assassin who kills before anyone even knows they are there, and more the slow walking movie villain who is somehow always faster than they should be and more capable than one could ever imagine. 

Practiced Hand

Starting at 3rd level, you gain the "True Strike" cantrip, and you can cast it as a bonus action. You can use this bonus action a number of times equal to your proficiency bonus, and you regain all expended uses when you finish a long rest.

Stoic Awareness

Starting at 3rd level, whenever you finish a short or long rest, you can add your proficiency bonus to either:

1) your AC, until your first action in each combat (regaining this bonus when combat ends).

or,

2) your initiative rolls.

Hard Hitter

Your chance to critically hit has increased, and even fallen under your control! Your crit range is now 19-20. You can heighten this ability, and choose to crit on a single attack if you would hit normally (not on a miss). Once you have heightened this ability your crit range returns to a base 20 and you cannot heighten it again until you complete a short or long rest.

Well Stanced

Starting at 13th level, you gain Freedom of movement (as per the spell) while you are conscious. Also, if an enemy attempts to physically/magically restrain/grapple you, they must succeed on a Charisma Saving Throw or be frightened of you for a number of turns equal to the amount by which they failed the save. A creature can spend their entire turn gathering their will and resolve to end this effect (this means no actions, bonus actions, movement, or reactions until their next turn starts).

Save DC = 8 + your proficiency bonus + your Dexterity modifier

Grand Sneak Attack

Starting at 17th level, you become a master of instant death. Your sneak attack damage die change from d6's to d8's (instead of dealing 9d6 when you sneak attack, you deal 9d8). Your attacks cannot be at disadvantage for any reason.