Since this seemed to be such a great success...
World boss- Players join World boss event, and is placed in a series of stages
Stage 1 - 1 random mob
Stage 2 - 5 random mobs
Stage 3 - 15 random mobs.
If 1 of the random mobs are exceeds then there will be a total of 5 exceeds
If 1 of the random mobs are Vulcans then there will be a total of 3 vulcans
If 1 of the random mobs are dragon then there will 1 dragons
Ex- Stage 1 = 1 exceed so in total monsters would be 5 exceeds
Stage 2 = 5 mobs 2 exceeds = 10 monsters, 3 vulcans = 9 monsters in total 19 monsters are fighting
Stage 3 = 15 mobs 10 dragons 5 exceeds = 35 monsters in total.