That was happening a lot, and it didn't seem like there was any real...synergy in it. We just went from group to group and eventually a lot of health bars dropped when the WS/Flame attacks went off. I wasn't aware that raptors were a bad enemy though. I'll keep that in mind for sure. I'll give a few other spots a shot, but I'm glad it wasn't me. At first I thought...maybe they split up to bring the mobs over here, so you know, we could keep chaining. But they just stayed around 2x my cast range, way off and died. :/

Anyhoo, live and learn. Thanks all for the replies.