Oil of slipperiness

Oil of slipperiness, also known as salve of slipperiness, was a magical unguent that rendered a creature extremely difficult to restrain.

Description
The oil was heavy, black, and sticky, but flowed surprisingly quickly out of its container.

One dose of oil of slipperiness was sufficient to cover the entire body and equipment of a human-sized creature. More doses were required if intended to be applied over a larger individual. Applying the oil was a process that took 10 minutes.

Powers
One application of the oil granted a creature with the effects of a freedom of movement spell for 8 hours. Alternatively, pouring the oil on the ground covered an area equivalent to a square on a side, giving it the effects of a grease spell for 8 hours.

An annointed creature or area could be cleaned of oil of slipperiness by wiping or rinsing with alcohol or wine.

Appearances

 * Adventures
 * Waterdeep: Dungeon of the Mad Mage