The Pokemon Company has announced a global ‘Ultra Spooky Cup’ for October!

Pokemon Ultra Sun and Ultra Moon players can earn a Shiny Mimikyu just by participating on the event dates. The competition will be focusing on ‘spooky’ pokemon this time – so participants will be limited to quite a small set of eligible fighters.

Do note that Mega Stones are also banned.

You can check the eligible list of Pokemon here, courtesy of Serebii.

The newest Online Competition may send shivers down your spine and put a Shiny Mimikyu in your goody bag, too. It’s time to sign up for the Ultra Spooky Cup, a Single Battle competition permitting only the spookiest and creepiest Pokémon we could track down. This competition will feature plenty of haunting Ghost types (like Palossand), Pokémon with a sinister visage (like Midnight Form Lycanroc), and even Pokémon like Pikachu and Eevee that are known to wear costumes for special occasions. Be prepared—even the spookiest of Mythical Pokémon will be haunting this Pokémon Ultra Sun and Pokémon Ultra Moon competition!

All qualified participants in the Ultra Spooky Cup Online Competition will receive a Shiny Mimikyu, so make sure to sign up! Players must complete at least three battles to qualify. You’ll be eligible to receive a Shiny Mimikyu whether you win or lose, so find a team and have some fun. The event begins at 00:00 UTC on Friday, October 26, and ends at 23:59 UTC on Sunday, October 28, 2018. Trainers will be limited to 15 battles per day, with unplayed battles carrying over to the next day.

For the full details, you can also check out The Pokemon Company’s website.