"Increases your movement speed for 5 seconds after a critical hit."
Synergies
Used via Porcupack, which inherently involves rolling, will deal critical damage every time.
This weapon synergizes well with the Front Line Shield due to the fact that parrying with the latter grants a +50% damage bonus to melee attacks for 6 seconds in addition to activating the critical condition for the Rapier.
Due to its high attack speed and ability to consistently land critical hits on every single attack, the Rapier also pairs well with the Instinct of the Master of Arms mutation.