When it rains, wait for the clouds to break somewhere and look for a rainbow. If you find one, put a saucer or some other nonmetallic pan outside where it can catch rain. If it rains while the rainbow is still present, save the water for ritual uses. It has been blessed by the rainbow’s appearance. Because the rainbow contains all colors, this “brew” is useful for all types of magick. Bottle and label. Add to bathe or anoint the body and hands while visualizing your magickal goal.
From Miss Stars Grimoire
Comment