Zornesk can take the Dash, Disengage, or Hide action as a Bonus Action.

Zornesk can use a Bonus Action to Steady Aim, giving himself Advantage on his next attack roll this turn if he has not moved during the turn and does not move afterward. The attack must use a Ranged weapon or a Finesse weapon.

Zornesk can use a Bonus Action to make a Dexterity (Sleight of Hand) check, use Thieves' Tools to pick a lock or disable a trap, or take the Utilize action to interact with an object.

Zornesk strikes a distracted target with a precise rapier thrust, adding 1d6 Sneak Attack damage once per turn.

Zornesk turns a successful Sneak Attack into a sudden retreat, moving up to half his Speed without provoking Opportunity Attacks.

Zornesk releases a sharp, draconic shriek that rattles nearby enemies and gives his allies an opening.

Zornesk gains proficiency with light armor, simple weapons, hand crossbows, longswords, rapiers, and shortswords. He is proficient in Dexterity and Intelligence saving throws, and with four skills of his choice.

Once per turn, Zornesk deals an extra 1d6 damage to a creature hit with an attack using a Finesse or Ranged weapon if he has Advantage on the attack roll, or if an eligible enemy of the target is within 5 feet of it. He does not need Advantage if he is not suffering Disadvantage.

Zornesk knows Thieves' Cant and one other language of his choice, allowing him to communicate in coded criminal jargon and recognize hidden messages.

Zornesk can choose the Thief archetype, gaining its features.

Zornesk can use a weapon's Mastery property when wielding a weapon for which he has proficiency, including Nick with daggers and Vex with rapiers or shortbows if those weapons are mastered.

Zornesk gains the Alert Origin feat from his Criminal background.

When Zornesk deals Sneak Attack damage, he can apply one Cunning Strike effect by expending one of his Sneak Attack dice. He can use Withdraw to move up to half his Speed without provoking Opportunity Attacks, or Trip to force the target to make a Dexterity saving throw or fall Prone.

Zornesk gains Expertise in two additional proficient skills or tools. His expertise applies to Acrobatics and Sleight of Hand, doubling his Proficiency Bonus for those checks.

When Zornesk makes a Dexterity saving throw to take half damage from an area effect, he instead takes no damage on a success and half damage on a failure. He also gains Advantage on saving throws against effects that impose the Blinded, Charmed, Deafened, Frightened, Poisoned, or Stunned conditions.

Climbing no longer costs Zornesk extra movement, and he can make a running jump after moving only 5 feet on foot.

Zornesk has a reliable criminal contact who can provide information, pass messages, or arrange introductions within underworld circles, though favors may carry risks or obligations.