Well ... now that you have seen what you can evoke here from one of our
resident hubris driven, misanthropic, know it all's here's a link to a
text you might find of interest on the actual subject you ask about. As
you note, and our resident know it all prefers to ignore, in favor of
its pet fetish of telling you & every one else what a genetic mistake
they are rather than answering your question about what these practices
can achieve, which can be explained in various ways, such that if you
are not already familiar with it the entire text of Liber ABA Book 4, is
worth even a casual perusal.
http://www.sacred-texts.com/oto/aba/chap1.htm
"...the magician identifies himself with the Deity invoked. To "invoke"
is to "call in", just as to "evoke" is to "call forth". This is the
essential difference between the two branches of Magick. In invocation,
the macrocosm floods the consciousness. In evocation, the magician,
having become the macrocosm, creates a microcosm. You "in"voke a God
into the Circle. You "e"voke a Spirit into the Triangle. In the first
method identity with the God is attained by love and by surrender, by
giving up or suppressing all irrelevant (and illusionary) parts of
yourself. It is the weeding of a garden."
