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Thank you for your suggestions, they are accepted, as meditation can always improve.
Are you sure they are corrupt? Satnam means truth is my name, it is also used in kundalini yoga, I have always used it in yoga and it has had a good effect.
Then "ong namo guru dev namo", it is a formula whereby one bows down to one's higher self, and at the same time one connects to this golden chain of which the ancestors who practised yoga were a part, up to the Gods themselves.
For mudras, I always used them in the way I wrote above, to feel the element and to meditate on it, and it always gave me results.
Try to elaborate more on why they would be corrupt or powerless.
It is as Stormblood says, the mantra's are exactly as he explains, watered down versions of the mantra's with actual power. Think for a moment what such a mantra tries to accomplish?
First, "ong", where is the power in that? It doesn't activate energy channels or Nadi's, instead it has a closed effect, which is negative for the flow of energy or consciousness.
"Namo", is indeed just a watered down and corrupted version of Namah, which is the word of power for Name or Title or to mean the being of something. "Namo" holds none of the power that Namah has, and is used in the same context here, except that you would be wasting time vibrating it.
Guru - Dev, basically a generic title for the enlightened one, but abbreviated and thus watered down. The one who teaches the way to the truth, in other words, it can refer to Deva, which is the Enlightened one, and also the Deimon in Greek, which is also the shining one and enlightened one. It is a title for any being considered ascended, when used in the proper context.
However, there are stronger words for this, and even "regular" SaTaNaMa does the same thing, except it is countless times more powerful, as one directly invokes Satan himself as the ultimate Truth of All things, the root of Creation in the actualized form of the 4 elements that make up material manifestation.
Therefore, rather than this mantra, indeed you can use SaTaNaMa by itself, and you will have much greater effects.
This "technique" you propose for how this mantra is used, is also false. One can do that sort of technique without mantra, and just by bowing your head to Satan and your ancestors in thanks and realization, it is nothing special. One can do this through the consciousness and the self realization in reflection upon the inner microcosm and the outer macrocosm.
As for the bowing to the higher self, why would one bow to the higher self?
My Higher self would slap me for bowing to him, because, why would I bow to myself?? He is infinitely higher than me, but he is still me. There's many things he'd slap me for, this is definitely one of them.
Connecting to the higher self comes through raising the current self to higher states of consciousness where one opens up to the higher self that exists out of reach of the present self normally, this comes too from realization of the current self and understanding the existence of the higher self.
Bowing your head to him isn't going to help there, but spiritual practice will, especially with a righteous and strong heart that aims towards elevation and enlightenment.
Your higher self needs your present self to open up to spiritual advancement and to higher knowledge, to learn and advance as a being towards the Godhead, so your current self gets to approach the higher self out there and eventually the present self becomes the higher that you look up to now and which exists out there.
As a blood dedicated Zevism, one would already be part in a far deeper and direct sense to the greater consciousness of all those who are on the spiritual path to ascension and enlightenment, both of other people on the path past, present and future, but also the Gods who are far above.
The dedication ritual is your connection into this sphere, and into this web of fate in the most direct way possible. To connect deeper, one should do the God rituals, to directly invoke Them and begin to comprehend Them, and all they rule over, which build within the soul a foundation to understand all things and reach Truth that nothing else can accomplish.
What I mean by this is, we have methods that far surpass the ordinary things available elsewhere. So, to us, none of these mantra's or things are very special or interesting, neither do they mean so much as is attributed to them by many.