Look at the minimap for the spawn.
So… this was about 2-3 months when I still played. My guild and ZnorDarkar were doing a shatters and we saw a shit ton of stone mages rush towards us when we went to the switch, almost killing and making a lot of people nexus. I checked the spawn and it was a cross formation with random enemies. I think there were a lot of fire and ice archmages and ice adepts in a perfect formation, if memory serves.
Has anyone seen this spawn happen before? Is this a glitch?