Geometria Arcana, part 2 is a manual in The Blood of Dawnwalker.
Certain geometric patterns focus aetherial energy. Draw them on vellum, and you shall create scrolls imbued with magic power. Carve them in your own skin, and you shall draw energy from behind the veil. What shapes, you ask? You may simply copy them from the works of others. Or – close your eyes, bring attention to the space between your brows and breathe deeply. Soon, the most complex shapes shall emerge.
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Transcribed from DawnwalkerDB.