Ose is a President of the Ars Goetia, ruling 3 legions of spirits.
| Rank | President |
|---|---|
| Legions | 3 |
| Powers | Knowledge & sciences, Divination, Transformation |
| Enn (modern chant) | «Ayer serpente Ose» |
| Alternate names | Oso, Voso |
| Sources | Ars Goetia, Pseudomonarchia |
| Seal no. | 57 / 72 |
| Cardinal king | Amaymon · South (S) |
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A leopard who then takes the form of a man.

He makes one skilled in the liberal arts, gives true answers concerning divine and secret things, and transforms a man into whatever form the magician desires, making him believe that he is truly that thing.
Ose appears in Weyer as Oze, within the catalogue reorganized by the Ars Goetia. The Lemegeton preserves his main traits: initial leopard form, answers concerning divine and secret matters, and the power to alter a person's perception. Already attested in the Livre des Esperitz (15th c.) as «Oze (f182v)» and in the Liber Officiorum Spirituum (Folger V.b.26, 16th c.) as «Oze (no. 9)».
Ose's main seal follows the printed Mathers–Crowley (1904) form; the Sloane MS 2731 manuscript facsimile is shown separately for comparison.
The main image and SVG/PNG downloads reproduce the printed form of S. L. MacGregor Mathers and Aleister Crowley's 1904 edition, using the normal vector pack documented on Wikimedia Commons (public domain/CC0). The Sloane MS 2731 facsimile remains separate for comparing manuscript variants; it is not used as the main image.
The FULL manuscript facsimile («Lemegeton, Clavicula Salomonis», Sloane MS 2731) is in our library; the original is held at the British Library (Sloane MS 2731).
According to the Ars Goetia, the operation is the same for all 72 spirits:
No direction, timing, obligatory offering, or individual ritual caution is recorded for Ose.
Source: Ars Goetia (17th c.); already in Weyer's Pseudomonarchia Daemonum, 1577, as Oze
The common Goetic operation also adds, when needed: to constrain a resisting spirit (Wellcome MS 110, c74–c78), to show it the Pentacle of Solomon once manifested (Ars Theurgia-Goetia), to work in its planetary hour and day (by rank), and finally to give it licence to depart —and never before (Wellcome MS 110, c53). Practise the full rite at The Practitioner's Table.
Enn (modern chant): «Ayer serpente Ose»
Source: Enn of modern demonolatry (lists circulated by S. Connolly and Valerie Corban; tradition collected in The Complete Book of Demonolatry, 2006)
The modern chant is commonly used in practices of invocation or meditation, without authority in the ancient Solomonic rite.
In modern demonolatry, practitioners describe Ose's presence as an intense, dense, and constricting energy, often perceived as a heavy physical pressure that demands absolute focus. He is considered a secretive and highly rigorous spirit who tests the invoker's mental stability through relentless psychological transformation. He is typically worked with to unveil hidden truths, radically alter personal perception, and develop technical or analytical skills.
Personal gnosis (UPG): how contemporary practitioners say they experience it. This is subjective experience, not a historical source or doctrine; it does not come from the ancient grimoires and may not be real.
Source: S. Connolly, «The Daemonolatry Goetia» (2010) y testimonios de la práctica moderna.
Ose is one of the 72 spirits catalogued in the Ars Goetia (the first book of the Lemegeton, 17th c.) and in Weyer's Pseudomonarchia Daemonum (1577); it is listed with the rank of President. It is not a deity or a biblical figure: it is an entry in these historical spirit-catalogues.
The seal image of Ose that we display and offer for download follows the printed Mathers–Crowley (1904) form, using the normal vector pack documented on Wikimedia Commons (public domain/CC0). The Sloane MS 2731 manuscript facsimile is provided separately because Lemegeton witnesses preserve variants.
Ose is a President, ruling 3 legions of spirits according to the Lesser Key of Solomon.
According to the ancient sources (the Lemegeton, the Pseudomonarchia Daemonum), Ose is summoned with the goetic rite: the Circle and the Triangle of Art are traced, its seal is engraved and worn, the candles are lit and the conjuration is spoken by the divine names; if it delays, it is constrained, and at the end it is given the licence to depart. This is historical-documentary material, not a how-to for real summoning.
He makes one skilled in the liberal arts, gives true answers concerning divine and secret things, and transforms a man into whatever form the magician desires, making him believe that he is truly that thing.
Ose appears in Weyer as Oze, within the catalogue reorganized by the Ars Goetia. The Lemegeton preserves his main traits: initial leopard form, answers concerning divine and secret matters, and the power to alter a person's perception.
The enn of Ose circulating today is «Ayer serpente Ose». It is a MODERN demonolatry chant (late 20th c.); it does not appear in the old grimoires.
→ Where does «your demon by birthdate» come from? See how the different systems distribute the 72 spirits: Goetia Correspondences.
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