Duelist

you are more adept in one on one combat 

Parrying Strike

if an opponent scores a natural one on an attack roll against you. You gain advantage on the next attack you make against that target.

 

Duelist defense

as an bonus action, you add your Intelligence modifier to your AC until the start of your next turn. You can use this feature a number of times equal to your Intelligence modifier. You regain all expended uses when you finish a short or long rest.

Riposte

when you use your Duelist's Defense ability and an opponent misses, you may make an immediate attack against your attacker as part of your reaction.

Uncanny Dodge

when an attacker that you can see hits you with an attack, you can use your reaction to halve the attack's damage against you.

Improved Critical

you get a critical hit on a roll of 19 or 20.

Master Duelist

your mastery of the blade lets you turn failure into success in combat. If you miss with an attack roll, you can roll it again with an advantage. Once you do so, you can’t use this feature again until you finish a short or long rest