Funnily enough, "antinomian!" is, indeed, one of them. Off to look up the other.;)

No...on second thought, probably not; that's an Orthodox term. Here, one guy's a Nazarene, the other some variant on Calvinist--he argues that his magical powers must be God-given, because it's impossible to perform miracles while quoting Scripture if your power comes from the Devil. To which the other guy says: Well, false prophets...and the fight is on!