I have met a horde arcane mages group on Cyclone battlegroup EU servers a couple of times.
Always when I kill him he stays away from my group. Anyways, our only communication tends to be "You hit my grounding totems... I kill you... thx for the free honor points".

Thanks to him I learned that if a shaman has a single grounding totem casting 5 chain lightnings at once will make them all land into the totem, so when I see a poor shaman laying a grounding totem I just shock the totem with my main and then chain lightning him to death with the slaves.