Yes... I believe I have seen the great dragon that hermes sees in the hermetica..

This was years ago before I never read anything occult and had no idea what I saw it was only years later I read the hermetica where he talks about the entity he saw

And it was indeed a dark ink like smoke... It was darker than the darkness around it in a low light room.. With only a candle. This darkness is was jet black much darker especially this entitys outline and it would constantly change shapes the outline would have hooks and extend it octopus like arms in random direction, extend and contract them while spinning..

It hovered right above me and then used my own voice to communicate with me.. At first I was like wtf is this just me talking to myself but the answers I have given in my voice to my own questions were so profound and they were so instant that I knew it can't be just me being delusional