Is it wrong to participate in churches that feature displays of prophecy or "spells" to ward off evil?
Anytime a Christian seeks for miracles and signs rather than for God's word they are moving in a dangerous direction. The church has always been subjected to false teachers promising personal revelation and performing signs. The Bible warns about these evil men, in particular:
The Apostle John also warned about those who try to fool believers by their signs and prophecy:
We should avoid such people and seek the word of God. When we become students of God's word, we are taught by the Spirit to discern good from evil and press on to spiritual maturity (Heb 5:13-14).