Ophiel

Seal of Ophiel

Ophiel is an Olympian spirit in the grimoire known as the Arbatel de magia veterum. He rules over Mercury.

OPHIEL is the ruler of those things which are attributed to Mercury; he gives familiar spirits, teaches all arts, and enables the possessor of his character to change quicksilver immediately into the Philosopher's Stone.
 
Arthur Edward Waite, The Book of Black Magic

[1]

References