Shiny Celebi and Dada Zarude

Sign up for the Pokémon Trainer Club newsletter and opt in to marketing emails before September 25th to get codes for both shiny Celebi and Dada Zarude to use with Pokémon Sword and Shield. Granted, you won't get the codes instantly so you'll need to keep an eye out for a future email since no exact date was given. If I had to guess I'd say that it would tie with the Netflix release of Pokémon the Movie: Secrets of the Jungle on October 8th. If this runs anything like the previous event for Zarude, the codes will be available for a very limited time and if the end date passes you're out of luck. If you don't get an email within a couple of weeks of September 25th, I would recommend reaching out to support sooner rather than later to get your codes that way. You can get the details about the codes here.