I attend a weekly spiritual development group (not psychic stuff, more self awareness and improvement, although at times we do have practise at aspects from that realm such as healing, mediumship, psychometry)
We all have to draw one of these cards each week and really examine what our soul is telling us on a deep level. Sometimes it is difficult, but as the weeks have gone by, we are finding the process easier and less stressful. Many of us actually are now open and enjoying the process. They have become none threatening and non intimidating.
I think it takes time to get over that initial feeling of discomfort. They are there to make you resonate with your soul self, and as such it is an eye opener for sure. I have actually got both sets on order now and look forward to taking my own set with me each week. Usually we pass the decks around and draw a card each, but if you are at the end of the queue, your selection is a little restricted accordingly.
I did have the 'big scream' card on my very first draw of the deck. I guess my conscious self did baulk somewhat, and I still don't know how I was supposed to interpret it, but once I reminded myself it was my soul trying to tell me something - nothing more and nothing less, I let go of that fear.
I do not see them as calling in entities or energies that could cause problems. They are there for us to converse with our soul or subconscious and examine what it is we should be aware of.
Davina