Scrying helps develope the astral senses, which can in turn assist the development in other areas of one's magickal path. Evoking spirits into the black mirror is an immediate benefit and can act as a crutch until one gains the skill to evoke spirts to our physical world. Other benefits of scrying allow one to see the past or future depending on what question you ask it via either signs and symbols or actual scenes being played before your eyes. Finally, mastering scrying allows for an easy transition of one's sight to viewing other's auras, and by reading the aura, one can know heart and thoughts of the one being read. In conclusion, proficiency in scrying has quite a number benefits and is an extremely valuable tool in any magician's arsenal.
People like you and me have no problems raising power for rituals, charging sigils (like for Chaos Magick), or working Psionics, but unfortunately our handicap early on is the lack of observable results. Basically, we're working in the blind. But just because you don't see what you are doing right now doesn't mean you aren't doing anything, so don't get discouraged. Keep working at it. Many neophytes try magick at first but cease the Arte shortly after because they don't get the immediate, observable results that they expect.
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