In addition to a successful hit you may use 1 charge of Bark's Bite
Creature is restrained: Arestrained creature's movement speed is reduced to 0
Attack rolls against the creature have advantage on attack rolls and the creature's attack rolls have disadvantage
The creature is disadvantaged on DEX saving throws
Proficiency with a Shortsword allows you to add your proficiency bonus to the attack roll for any attack you make with it.
This weapon has the following mastery property. To use this property, you must have a feature that lets you use it.
Vex. If you hit a creature with this weapon and deal damage to the creature, you have Advantage on your next attack roll against that creature before the end of your next turn.
Notes: Restrained, Finesse, Light, Vex