Check the fireworks dealers... you can buy them
How can their only be one winner and still have balance. If said weapon was identical to warsoul, stat wise, only one person will have +50 attack level on a weapon. Therefore, there will be no balance as they will faceroll you with over 75 attack levels (if rank eight). If the stats were changed, I could see this being a nice event. On another note, how could you possibly hold this event once a year or merely once in general, and expect people not to complain and whine about it? One person having this weapon will cause more problems than you think.