NB: Nullum Experimentum de Spiritibus potest fieri sine Circulo praeparation ut in arte continetur*.
Magical Circle according to the Art of Drawing Spirits into Crystals attributed to Trithemius.
Size: LARGE 59" x 53" or XL 78" x 70"
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* No magical operation with spirits should be made without an enclosed Circle prepared according to the rules of the art.