I think its called Elizabeth or Protect ElizabethI agree with Both Shawn and sniper. Add the fishing derby event to that was good for those that actually wanted something with a little bit of effort. As price I would say 7 day pattern or costume and once a month a skill reset stone and/or stat reset stone for those that screwed up their build can have a 2nd chance to fix it(none tradeable ofc).
Ohh and I just remembered another event that was actually good and challenging. I dont remember the exact name of it but I remember the mechanics. It was an NPC that a pt of 5 players had to escort from Kai'non to Montt and on the way they had to protect her from other players if she died she droped 5-6 chests with prices but if she was either stolen from the started players or got to her destination without problem then she gave better prices I think it was costumes and/or timed accs don't remember well. This event can be changed to be from Einhoren to Kai'non, Kai'non to Montt, Einhoren to Vena, Kai'non to Arbelorn and once a month the hardest one with Etton to Kainon with better prices for this last one ofc.
A tournament event, wherein it will consist of 8-10 parties. PVP with elimination rounds and final round. But since players here are such a pain in the as* specially the 2 big guilds in Jainus server, it's unlikely to happen. LOL