Oil of etherealness was a type of magical oil.
This oil appeared cloudy gray. Any condensation that occurred inside its vial would evaporate quickly.
This oil would turn any creature that it's applied to, as well as said creature's belongings and worn equipment, intangible. In other planes of existence, it would also allow a creature to enter the Ethereal Plane, but in Ravenloft this effect was negated. It took about 10 minutes to apply and lasted for one hour.
- Oil of etherealness article at the Forgotten Realms Wiki, a wiki for the Forgotten Realms campaign setting.
- Mike Mearls, Jeremy Crawford, Christopher Perkins, James Wyatt (2014). Dungeon Master's Guide 5th edition. (Wizards of the Coast), pp. 183–184. ISBN 978-0786965622.
- Bruce Nesmith, Andria Hayday, William W. Connors (1994). “Realm of Terror”. Ravenloft Campaign Setting (TSR, Inc.), p. 122. ISBN 1-56076-942-4.