Vassago (also known as Vasago or Usagoo) is the third demon listed in the Ars Goetia section of the Lesser Key of Solomon, a 17th-century grimoire of demonology. Described as a mighty Prince of Hell with a “good nature” (similar to the demon Agares), he commands 26 legions of spirits. Unlike many demons, Vassago is portrayed as truthful, just, and benevolent—often appearing as an angelic or robed figure in muted greens or earth tones. His primary powers include revealing past and future events, locating lost or hidden objects, uncovering treasures, and aiding in divination, prophecy, and clear communication. Practitioners report him as approachable, humorous, mischievous yet serious when needed, and excellent for beginners due to his forgiving and diplomatic demeanor.

Preparation for Summoning

Summoning Vassago, like any Goetic ritual, requires respect, focus, and ethical intent—treat it as a sacred interaction, not a game. Approach with purity of mind and body to avoid unintended consequences. Key steps from traditional and modern sources:

Timing and Conditions: Perform the ritual on a Sunday (associated with the Sun, his planetary influence) around 2 AM, during a waxing or full moon for enhanced clarity. Ensure a quiet, distraction-free space—Vassago thrives in calm, meditative environments. Abstain from meat, alcohol, and sexual activity for 4+ days prior to purify yourself.
Study the Spirit: Research Vassago deeply before proceeding. Meditate on his sigil (a geometric seal symbolizing his essence) daily for a week to build a personal connection. Visualize him as a tall, robed figure with multiple arms or as an ethereal angel.
Gather Materials (Substitutes are fine if intent is strong; symbolism matters more than extravagance):

Sigil: Draw or print Vassago’s sigil on parchment or paper. This is the core “link” to him—trace it with precision.
Candles: One light green (for harmony) and one white (for clarity). Light them during the ritual.
Offerings: Copper coins, a green or rose quartz stone, sweet wine, or incense made from rose petals and frankincense. Other traditional items include bone, cedar, saffron, lemon balm, steel, tin, gold, Gilead, grain of paradise, cedarwood, ambergris, or saffron incense.
Tools: A black mirror or scrying tool for visions; optional protective circle (drawn with chalk or salt) for safety. No need for elaborate items like swords—use a knife or finger to trace symbols.
Attire: Dress neatly and respectfully, as if meeting royalty—clean clothes in earth tones.

Step-by-Step Summoning Ritual
This is a simplified, safe method adapted from the Lesser Key of Solomon, modern occultist guides, and practitioner accounts. It’s beginner-friendly but customizable—always prioritize consent and mutual respect. If you’re new, consider guidance from an experienced practitioner.

Set the Space: In your quiet room, draw a protective circle (about 9 feet in diameter) on the floor with chalk or visualize it mentally. Place the sigil in the center. Arrange offerings nearby. Light the candles and incense. Sit or stand facing east (direction of revelation).
Ground and Center: Breathe deeply for 5-10 minutes. Meditate on your intent (e.g., “Reveal the location of my lost keys” or “Show me future opportunities”). Recite a personal prayer: “Vassago, Prince of truth and hidden knowledge, I approach with respect and seek your wisdom.”
Invoke with the Enn: Chant his enn (summoning call) 3-9 times, focusing on the sigil:
“Keyan vefa jedan tasa Vassago.”
(Pronounced: KAY-an VEH-fah JED-an TAH-sah VAS-ah-go.) This vibrates his name and essence.
Full Invocation: Recite a formal call (adapted from Goetia texts):
“I call thee, Vassago, mighty Prince of the infernal realms, thou who discerns past, present, and future. By the power of thy legions and the bonds of Solomon, appear before me in friendly guise. Reveal what is hidden, guide my sight, and grant thy truthful counsel. I offer [list offerings] in gratitude and bind thee to peace.”
Gaze into the black mirror or sigil. Burn the sigil if it feels right (safely, in a fireproof bowl).
Communicate and Receive: Wait patiently—Vassago may appear visually, as a sensation, voice, or intuitive flashes. Ask clear questions one at a time. He communicates via images, words, or emotions; journal everything. Sessions last 15-30 minutes.
Dismiss and Close: Thank him: “Vassago, I thank thee for thy presence and wisdom. Depart in peace to thy realms, harming none.” Extinguish candles (snuff, don’t blow). Dismantle the circle. Bury or dispose of offerings respectfully (e.g., pour wine into earth).

Tips and Warnings

Personal Touches: Vassago appreciates humor, flexibility, and emotional openness—share a light-hearted story during invocation. Build a long-term relationship via pendants charged with his sigil or dedicated meditations/sexual energy (as some practitioners note his affinity for eros and love).
Safety: Despite his benevolence, all summonings carry risks—mental strain, unexpected insights, or spirit interference. Use protections like the Lesser Banishing Ritual of the Pentagram beforehand. If overwhelmed, end the ritual firmly.
Ethics: Only summon for positive, non-harmful purposes. Vassago aids truth-seekers, not manipulators.

Results vary by practitioner—many report profound clarity and lost items recovered. If this aligns with your path, proceed mindfully.