Show off a creepy Pokémon-themed costume, put together a specially themed deck or team featuring spooky ghost Pokémon, or strike fear into your opponents’ hearts the good old-fashioned away—with your terrifying battle skills! During the month of October, all Pokémon Leagues in the US and Canada will be eligible to host Pokéween events that award participants with tantalizing Trick or Trade BOOster packs and an opportunity to win a special prize.

All attendees will earn one Trick or Trade BOOster pack, with additional BOOster packs being awarded at the organizer’s discretion. Each Pokémon League will also award a Haunted Pokémon Village figure from Pokémon Center to one Trainer who really gets into the spirit of Pokéween—the criteria for this award may vary from community to community, so be sure to check in with your organizer to see how you can best channel those Pokéween vibes. If you’re not sure where to find an event near you, check out the Event Locator.

Enjoy Pokéween at Pokémon League, Trainers!