Oil of Slipperiness

•The oil can cover up a Medium creature, along
with the equipment it's wearing and carrying. Applying the oil takes 10 minutes. The affected creature then gains the effect of a freedom of
movement spell for 8 hours.
•Alternatively, the oil can be poured on the
ground as an action, where it covers a 10-foot
square, duplicating the effect of the grease spell
in that area for 8 hours.
•This sticky black unguent is thick and heavy in
the container, but it flows quickly when poured.