Just out of curiosity, are you a Christian?
I was told that in Christianity, when you let go of your mind that you could open yourself up to the demonic. Meaning you could become demon-possessed or something? Haven't heard any reports of demon possession so far so I think you should be fine.
Honestly, all I-doser does is change your brain frequencies. We do that when we go to bed, and even things like watching TV, being really focused on something or going on a long run can alter your consciousness. Why fear what you don't know?
If you haven't tried drugs before and just want to play around then have fun, because it's totally safe. I would be more curious to know why the idea of doing drugs in the first place is less a concern for you than satanism.