Renders any person invisible.
Menail
In the De Secretis manuscripts (Clavicula Salomonis de secretis, 17th c. — Dresden N.91, Rps 3352 II, Venice b.93) as «Menail», with its power and its drawn character. This is the stratum preceding the printed Verum.
«Menail Invisibilem reddit ita ut Domum invadas, quin te aliquis videat.»
De Secretis · SLUB Dresden, Mscr.Dresd.N.91 · p.23-24 (ms.15-16)

This same character is also drawn (in red and green ink) in L'Art Magique (Wellcome MS.983, ~1709), the French witness closest to the printed Verum — public domain.

To Be Invisible: chameleon skin/polypody with the characters of Menail (triangular card), Syrach (square), and the sign of Lucifer (pentagonal parchment), in chameleon blood; sacrifice the chameleon with eleven resin and pitch candles; upon saying 'Hareoth, Menail, Bathalam' one becomes invisible. (Menail also appears in the operation of opening locks.)
De Secretis · Mscr.Dresd.N.91 · p.39-40 (ms.31-32); tambien p.34 (ms.26)
The printed Verum also describes another invisibility operation: gather seven black beans; place one in the mouth of a dead man’s head, two in the eyes, and two in the ears; make Morail’s character upon it and bury it face upwards. For nine days, before sunrise, water it with brandy; on the eighth day the spirit appears and, after the test, the beans that confer invisibility are kept.
Grimorium Verum · Libro III · operación de invisibilidad
The printed Grimorium Verum (Plaingière ed., 18th c.) names Morail among the eighteen spirits under Duke Syrach and sets out its office. Read it with the facsimile in our edition.
Offices transcribed by us from L'Art Magique (Wellcome MS.983, ca. 1709, public domain) and collated with the 17th-c. De Secretis manuscripts. Historical, educational material.
grimorium.lat · Grimorium Verum