Olympian spirits are seven spirits sourced from several influential renaissance and post-renaissance books of ritual magic/ceremonial magic, such as the Arbatel de magia veterum, The Secret Grimoire of Turiel and The Complete Book of Magic Science.
The powers and offices of the Seven Olympic Spirits are as follows:
ARATRON governs those things which are ascribed astrologically to Saturn. He can convert any living organism, plant or animal into stone, and that in a moment of time; he can also change coals into treasure and treasure into coals; he gives familiars and reconciles subterranean spirits to men; he teaches Alchemy, Magic and Medicine, imparts the secret of invisibility, makes the barren fruitful and, lastly, confers long life. He should be invoked on a Saturday, in the first hour of the day, 1 making use of his character, given and confirmed by himself.
The affairs of Jupiter are administered by BETHOR, who responds quickly when called. The person dignified by his character may be exalted to illustrious positions and may obtain large treasures. He reconciles the Spirits of the Air to man, so that they will give true answers, transport precious stones and compose medicines having miraculous effects. BETHOR also grants familiars of the firmament, and can prolong life to seven hundred years, subject to the will of God, which qualification imparts an air of caution.
PHALEG governs the things that are attributed to Mars. The person who possesses his character is raised by him to great honour in military affairs.
Solar interests are administered by OCH, who prolongs life to six hundred years, with perfect health therein. He imparts great wisdom, gives excellent (familiar) spirits, composes perfect medicines, converts any substance into the purest of metals, or into precious stones; he also bestows gold and a purse, quaintly described by the English translator of the Arbatel as "springing with gold." He causes the possessor of his character to be worshipped as a god by the kings of the whole world.
The government of Venereal concerns is entrusted to HAGITH, and the person possessing his character is adorned with all beauty. He converts copper into gold in a moment and gold instantaneously into copper; he also gives faithful serving spirits.
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.
Lunary concerns are under the government of PHUL, who truly transmutes all metals into silver, heals dropsy and provides Spirits of the Water, who serve men in a corporal and visible form; he also prolongs life to three hundred years.