I have family members who attend a charismatic church in Redding, CA - it's pastors encourage the use of things like fire tunnels as a means of worship, and they have frequent reports of strange happenings like rain showers and floating feathers in the building. The pastors also consult "seers" within their church. Lots of signs and wonders, miraculous healings, etc.
Anyway, I'm wondering if any of this sounds like demonic activity that Satan may use to deceive church goers into believing they are experiencing acts of the Holy Spirit? Can Satan perform true miracles/healings as a means to deceive? I mean, if it keeps the crowds coming and prevents them from hearing the gospel (sound Biblical teaching is completely absent), then "mission accomplished" ?