bueno encontre informacion :D pero no dice si estara en valkyrie (me imagino que si)
la info es esta:
1. Find the "Halloween Magician" in Payon (payon 162,176) across from the weapon shop. He will ask you to be at 0 weight before you can start the event.
2. When you accept, you will be warped to a Payon look-a-like map filled with Zombies, and your HP will be reduced to 1. You can not attack or use skills on this map. You must run to one of three portals at the bottom of this Payon to return to the real town, but the portal that works is chosen at random.
3. When you find the correct portal, you will respawn in Payon. Return to the NPC and receive a Halloween Ticket.
Tickets can be traded in for the following:
* 5 tickets = 1 Pumpkin Pie
* 20 tickets = Pumpkin-Head
* 50 tickets = Old Blue Box
* 70 tickets = Old Purple Box
* 200 tickets = Old Card Album
en pocas palabras vas con el tipo de payon con peso 0 y te lleva a un mapa donde tendras que correr de zombies (no puedes atacar ni usar skills) hasta uno de los 3 portales disponibles y al final te da un ticket y si los vas juntando podras cambiarlos por algun item que se menciona ahi arriba
informacion sacada de:
http://irowiki.org/wiki/Halloween_Event_(2008/10/28)_~_(2008/11/04)
PD: el evento termina el 4 de noviembre