As an action, you can create this vial of sticky black unguent that is thick and heavy in the container, but flows quickly when poured. The oil can cover a Medium or smaller creature, along with the equipment it’s wearing and carrying (one additional vial is required for each size category above Medium). Applying the oil takes 10 minutes. For the duration, the target’s movement is unaffected by difficult terrain, and spells and other magical effects can neither reduce the target’s speed nor cause the target to be paralyzed or restrained.
The target can also spend 1.5 meters of movement to automatically escape from nonmagical restraints, such as manacles or a creature that has it grappled.