Once per turn, deal extra 3d6 damage when hitting with a Finesse or Ranged weapon if you have Advantage, or if an ally is within 5 ft of the target and you don't have Disadvantage.

As a Bonus Action: Dash, Disengage, or Hide.

As a Bonus Action, gain Advantage on your next attack this turn — only if you haven't moved yet. Afterward, your Speed is 0 until turn's end.

As a Bonus Action: make a Sleight of Hand check (pick a lock, disarm a trap, or pick a pocket) OR take the Utilize action / Magic action to use a magic item that requires it.

Climber: Gain a Climb Speed equal to your Speed.
Jumper: Use DEX instead of STR to determine jump distance.

When dealing Sneak Attack, forgo 1d6 for an effect (Save DC 15). Poison: CON save or Poisoned 1 min. Trip: DEX save or Prone. Withdraw: Move half Speed without Opportunity Attacks.

When a creature you can see hits you, use your Reaction to halve the attack's damage (round down).

Nick: Light property's extra attack can be made as part of the Attack action (once/turn).
Vex: Hit with Shortbow → Advantage on your next attack against that creature before end of your next turn.

You gain Heroic Inspiration whenever you finish a Long Rest.

Immediately after rolling Initiative, swap your result with one willing ally's. Neither of you can have the Incapacitated condition to do so.

As you finish a Short or Long Rest, play a Musical Instrument (with which you have proficiency) to give Heroic Inspiration to allies who hear it. Number of allies affected equals your Proficiency Bonus.