The conjuror’s hand moves across the parchment in a single unbroken line, tracing a curve that doubles back on itself three times before locking into a sharp angle. That line is not decoration. It is the mechanism of the operation. The Seal of Amdusias is a geometric sigil found in the Ars Goetia, the first book of The Lesser Key of Solomon, used to evoke the thirty-seventh spirit mentioned in the grimoire tradition. Without the seal, drawn under strict ritual conditions, the conjuror has no authority over the entity. The seal of Amdusias — and the larger system of Goetic seals — is one of the most frequently misunderstood and abused elements of ceremonial magic. The sigil is not a drawing. It is a contract of containment.
A Seal Born from Renaissance Manuscripts
The earliest surviving list of spirits that includes Amdusias comes from Johann Weyer’s Pseudomonarchia Daemonum (1577). Weyer, a Dutch physician and student of Heinrich Cornelius Agrippa, cataloged sixty-nine demons as part of his larger critique of witch-hunting. He did not believe the spirits were real in the Christian sense. He considered them delusions. But he preserved the sigils anyway, drawn from earlier manuscript traditions we can no longer trace. Reginald Scot’s The Discoverie of Witchcraft (1584) printed the first English version of that list, including Amdusias and his seal. Scot’s purpose was the same as Weyer’s: to show that the claimed magical powers were either fraud or delusion. The seals he reproduced were woodcuts, crude but faithful to the manuscripts he had seen. The version most modern practitioners know comes from the Lemegeton manuscripts of the seventeenth century. These texts were hand-copied by scribes who often introduced small variations: a line that curved left in one copy might curve right in another, a dot might shift from one compartment to another. The seal of Amdusias survived those transmissions with relatively little change, probably because its design is compact and its geometry difficult to misread.
What the Seal Actually Looks Like
The seal of Amdusias is a composite figure. It consists of an outer circle or near-circle, inside which a series of curves and straight lines form what looks like two interlocking hooks or a stylized letter form. The exact design varies between manuscript families, but the core is consistent: a closed line with three inward loops and one pronounced outward projection. No scholar has definitively explained the logic behind the shapes. We have no surviving treatise from the original designers. The closest we can get is to compare the seals to angelic and planetary sigils from the Heptameron and the Key of Solomon tradition, where complex geometry was used to encode divine names or planetary forces. The seal of Amdusias likely follows the same principle: the lines trace a sequence of numbers or letters that spell the spirit’s name in a cipher now lost.
Why the Seal Matters in Ceremonial Magic
In Goetic ritual, the seal serves three functions. First, it identifies the spirit. The conjuror does not call on Amdusias by name alone. The seal is a unique signature, a form that the spirit is compelled to recognize and respond to. The grimoire instructs the magician to show the seal at the moment of evocation, often while holding it inside the triangle of art — a second, protective triangle drawn on the floor outside the main circle. Second, the seal is a vessel. The spirit is bound to its seal during the operation. If the magician loses control, the seal is removed, wrapped in black silk, and laid aside. The spirit is then trapped within the silk until released. Third, the seal is a piece of the ritual technology that protects the operator. The conjuror wears or holds the seal as a sign of authority. It is never left inside the triangle during the evocation itself. It stays in the magician’s hand or rests on the altar.
How the Seal Was Prepared
The grimoires are specific about materials. The seal must be drawn on virgin parchment, that is, parchment made from the skin of an animal that has never been used for any other purpose. The ink must be black, compounded from burned materials and gum arabic, not commercial ink. The pen should be a crow’s quill, not a goose feather. The drawing is done within a consecrated circle, often during the planetary hour and day attributed to the spirit. For Amdusias, classed as a prince under the direction of the zodiacal sign Sagittarius, the traditional time is the day and hour of Jupiter, because Amdusias is said to serve the king of the east, a Jovial figure. The seal is then censed with a specific incense. The usual choice for Goetic spirits is a blend of frankincense, myrrh, and a small amount of asafoetida. The asafoetida is not comfortable to burn. That is the point. Its sulfurous edge marks the seal as a spirit vessel rather than an object of devotion. We follow the same method in our own practice. The difference is that we use archival paper instead of parchment, ethical and accessible, and we consecrate the seal with the full eight-stroke banishing ritual before the drawing begins.
How the Seal of Amdusias Differs from Other Goetic Seals
Not all seals in the Ars Goetia are the same. Some are simple geometric figures, circles with crosses, triangles with dots. Others are calligraphic, resembling stylized Hebrew letters or monograms. The seal of Amdusias belongs to a subgroup of about a dozen seals that use recursive loops and sharp angles. This subgroup includes the seals of Buer, Phenex, and Sabnock. What distinguishes the Amdusias seal is its asymmetry. Most Goetic seals are symmetrical along at least one axis. The Amdusias seal is not. It has a slight tilt that gives it a dynamic quality. Some practitioners have connected this to the spirit’s nature: Amdusias is said to make trees bend and bow at his command, a power over natural forms that matches the seal’s organic curves. The seal also lacks the cross or crucifix that appears on many other Goetic seals. That cross was sometimes added by Christian scribes who wanted to assert the supremacy of Christ even on the demon’s own symbol. Its absence from the Amdusias seal suggests an older, pre-Christian design lineage.
Common Misconceptions about the Seal
The most persistent error is that the seal itself has innate power. It does not. It is a tool, useless without the ritual structure that surrounds it. A copy of the seal printed from an internet image and stuck to a wall does nothing. The seal only becomes active when it is drawn by a trained practitioner within a properly banished and consecrated space. Another misconception is that the seal is a summoning device, that showing it at random will draw the spirit into the room. No grimoire supports this. The seal is shown only after the full evocation has been spoken and the spirit has appeared. It is a binding, not an invitation. A third error is that the seal is inherently evil. For a reference library like Le Grand Grimoire, we note that the seal is a piece of ritual technology from a specific historical tradition. Moral judgments about it belong to the user, not to the object. The same seal that one practitioner uses for evocation another might use for a meditation on the nature of authority and obedience.
FAQ
Q: Can I use a printed copy of the seal instead of drawing it by hand? A: No. The act of drawing the seal is itself a ritual act that charges the object. A printed copy has no connection to the magician and no ritual history. Q: Is the seal of Amdusias dangerous? A: Not in itself. The danger lies in performing Goetic evocation without proper training. The seal is only a part of that larger practice. Q: What does the seal of Amdusias symbolize? A: The exact symbolism is lost, but the looped geometry likely encodes a divine name or sequence that acts as the spirit’s call sign. It also symbolizes the binding of the spirit within a closed form. Q: Do I need to destroy the seal after use? A: Traditional practice says to wrap it in black silk and store it safely. Burning it is also acceptable but releases the spirit’s charge. Do not discard it as trash.
The Seal as a Living Tradition
We do not treat the seal of Amdusias as a relic. It is a working piece of a tradition that survives because it has been practiced, not just read. Every time we draw that curved line we make a choice: to engage with a system that demands precision, courage, and an honest reckoning with the forces we name. The seal is not a decoration. It is a decision. For a deeper understanding of how the seal fits into the full Goetic structure, see our guide on Goetic evocation practice and the glossary entry for Goetic seals. If you are considering working with Amdusias himself, read our specific guide on the thirty-seven spirits of the Ars Goetia. The seal is the starting point. The work is everything after.