Ophiel is one of the Olympian Spirits.
Lore: Ophiel rules over 14 provinces of the Universe, rules over one hundred thousand legions of lesser spirits, and is associated with the planet Mercury. His day is Wednesday.
Powers: Ophiel rules over all forms of communication and commerce. He can grant one great wisdom in any discipline or field of study. He can grant the alchemist the power to turn the element mercury into the legendary "philosopher's stone".
To view his sigil, click HERE.
The Book Of Ceremonial Magic by Arthur Edward Wyatt, Chapter 2