Spiritus Ater, part 2 is a manual in The Blood of Dawnwalker.
Magic, though immaterial and intangible, is just as dependent on the breath. Only not the regular kind, drawn through your lungs. No, to keep the energy flowing, you must learn to breathe the aether using your very mind. Focus on the markings on your skin, and ye shall feel it come forth, like gusts of wind whistling through a crevice.
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Transcribed from DawnwalkerDB.