Serebii Update: The Shiny Eternatus event has started to roll out in Europe, starting with GameMania in the Netherlands. Available until November 17th 2022.
— Serebii.net (@SerebiiNet) September 27, 2022
We'll post more locations and dates as they are made available
Details @ https://t.co/gDbXkHSvkT pic.twitter.com/yiW8YXDqhU