Paracausal Fluid is an origin trait in Destiny 2 that can appear on 4 weapons. An enhanced version exists on crafted and some newer weapons.
What Paracausal Fluid does
Gain bonus handling and mobility when damaging targets with this weapon. Swords gain increased charge rate while this perk is active.
Enhanced version
Gain improved bonus handling and mobility when damaging targets with this weapon. Swords gain increased charge rate while this perk is active.