This might seem like an off-the-wall question, so brace yourself. I've recently been researching religion, especially ancient traditions. A recurring theme in shamanism seems to be asking spirits to intervene on the behalf of the shaman himself. It is said that shamans were those who had natural ability to communicate with the spirits. Another recurring theme on the nature of that communication is possession. A shaman was most powerful when he could allow the spirit to work through him. This is still around in some forms of voodoo where the practitioners actively seek possession from their gods or saints. However, there seems to be some danger to it in that some people have claimed to be possessed against their will or to have been unable to end a once desired communication with a spirit. My understanding is that Wiccan rituals aim to get spirit energy or energy from the world itself to attain positive effects in the life of the practitioner, much like shamans have done for thousands of years. Is there any danger of this spirit energy leading to possession in the way it occasionally tormented shamans? This may seem crazy, but it's what I've been thinking about lately. If I'm way off base please let me know.