Well, I think it’s like “can god make a ditch so deep he can’t jump over it?” - the point is, if you enter into a pact like that, you’re going to be held to it and so why bother risking that?
I think it is exceptionally stupid to pledge your eternity for short-term gains, and in most cases, utterly futile and counter-productive to ascent.
The only person I know who did this (Varnaxis) had pre-existing spiritual inheritance from past lives, and did it at a very young age early last century, when it was the only kind of spiritual aid he knew of, in order to basically save his own life.
Any adult reading this is not in that situation and should never consider this unless they have assured an ascended role in the heirarchy of the spirit they pledge to, as he got.
He also LOVES his liege lord Satan, and again this is a very different thing, because he was able to live his whole life harmonising and preparing for that permanent alliance after his life on earth was over.
To pledge eternal servitude to a being you don’t even know or can barely communicate with, and without having any terms or boundaries set after death, as so many beginners attempt to do, is utterly reckless and foolish. 