The Duelist

Adept at the art of pistol, you have gained abilities to shoot first and always hit the mark. 

Quick Draw

Starting at 3rd level when you take this subclass, you may use your cunning action to take the "Use An Object" action. Additionally, once per turn, you may draw or stow one one-handed item. (Including shields if you have proficiency, this overrides the don and doff times.) This does not require an action.

10 pace duel

Starting at 3rd level when you take this subclass, you may add your charisma modifier to your initiative bonus. Additionally, you may add your initiative bonus to the first attack roll you make per combat. If this attack hits, you may add your sneak attack dice to the damage roll without requiring advantage on the attack roll or an ally within 5 ft. (This will not trigger if you have disadvantage, and still may only be applied once per turn).

Fast Eyes

You may take the steady aim bonus action without the movement penalties during a duel, decided at your DM's discretion.

Deadshot

Starting at 9th level, when you use the 10 pace duel feature to add your initiative bonus to your first attack roll per combat, if the attack hits, you may add an additional number of sneak attack dice to the damage equal to (your initiative bonus) + (half of your proficiency bonus, rounded down). You may also use this feature, as well as the corresponding effect of 10 pace duel, outside of your first attack. You must fulfill the requirements to trigger a normal sneak attack. You may use this a number times equal to your proficiency bonus.

Guerilla Tactics

You may cast certain spells when you gain this feature at level 13. You gain a number of "Spell Points" equal to your proficiency modifier. These are restored after completion of a short or long rest

Mirage (3 points) - You may cast the Blur spell

Sand Cloud (1 point) - You may cast the Fog Cloud spell at 1st level, with a range of self, and the duration is 1 minute. You may choose to exclude yourself and up to one willing creature to see through the fog

Dust Attack (2 points) - you may cast the Color Spray spell at 5th level. You may choose to forgo the cone in favor of targeting one creature. this creature must instead make a charisma saving throw, with the DC equal to 8 + (Your Dexterity Modifier) + (Your Proficiency bonus).

Quicksand (1 point) - You may cast the Grease spell, centered on yourself. You may choose to allow yourself and up to one willing creature to automatically succeed on the saving throw

Bullseye

Starting when you get this feature at level 17, you may turn replace the roll of one attack roll with a 20. You may use this ability once before taking a short or long rest.

Unmatched Agility

At 17th level when you get this feature, you may add your proficiency bonus to your initiative modifier. This triggers reliable talent, and you may take expertise in this check. Additionally, your movement speed increases by 10 ft., and moving while prone subtracts 10 ft. from your speed, and otherwise produces no other hindrances on your movement.