Vexynne uses a bonus action to Dash, Disengage, Hide, or use Help against a creature within 30 feet that can see or hear her.

Vexynne can use a bonus action to take the Dash, Disengage, or Hide action.

Vexynne can use the Help action as a bonus action. When she uses Help to aid an ally's attack, the target of that attack can be within 30 feet of her rather than within 5 feet, provided the ally can see or hear her.

Vexynne halves the damage from one attack that hits her using her reaction.

Vexynne makes a weapon attack with advantage when circumstances permit and adds 6d6 damage once per turn when Sneak Attack applies.

Vexynne avoids damage from successful Dexterity saving throws and takes only half damage on failed saves.

Vexynne has proficiency with light armor, simple weapons, hand crossbows, longswords, rapiers, and shortswords. She also gains proficiency with thieves' tools and chooses four skills, including Deception, Insight, Sleight of Hand, and Stealth, as her proficient rogue skills.

Once per turn, Vexynne can deal an extra 6d6 damage to one creature she hits with an attack if she has advantage on the attack roll, or if another enemy of the target is within 5 feet of it and Vexynne does not have disadvantage.

Vexynne chooses Mastermind as her rogue archetype. She gains features from this archetype at 3rd, 9th, and 13th levels.

Vexynne can mimic the speech patterns, writing, and behavior of another person she has observed for at least 1 minute. She can perfectly mimic handwriting and speech if she has studied them for at least 3 minutes. A successful Insight check contested by her Charisma (Deception) check reveals the ruse.

Vexynne gains an Ability Score Improvement. Her Charisma score increases by 2, from 14 to 16.

Vexynne gains expertise in two additional proficient skills, Sleight of Hand and Stealth. Her proficiency bonus is doubled for these skills.

Vexynne gains proficiency in Wisdom saving throws.

When subjected to an effect that allows her to make a Dexterity saving throw to take only half damage, Vexynne instead takes no damage on a success and half damage on a failure.

Vexynne gains an Ability Score Improvement. Her Dexterity score increases by 2, from 15 to 17.

Vexynne gains proficiency in Wisdom saving throws as a rogue of her level, replacing the normal rogue proficiency in Dexterity and Intelligence saving throws only if selected through a separate feature. Her normal rogue saving throw proficiencies remain Dexterity and Intelligence.

Vexynne can treat a d20 roll of 9 or lower as a 10 whenever she makes an ability check that lets her add her proficiency bonus.

Vexynne gains an Ability Score Improvement. Her Intelligence score increases by 1, from 12 to 13, and her Charisma score increases by 1, from 16 to 17.

Vexynne knows the secret patterns and shortcuts of the city. She can find passages through urban areas that others would miss, and she can locate food, shelter, and other basic necessities for herself and her companions in a city.