From Friday, July 7th, 2023 to Sunday, July 9th, 2023, at 23:59 UTC and then again from Friday, July 14th, 2023 to Sunday, July 16th, 2023, at 23:59 UTC, Delphox with the Mightiest Mark will be appearing in black crystal Tera Raid Battles in Pokémon Scarlet and Violet.

Prepare to Face a Mighty Delphox!

Catch a Delphox with the Mightiest Mark! Delphox with the Mightiest Mark will be appearing in black crystal Tera Raid Battles from Friday, July 7, 2023, at 00:00 UTC to Sunday, July 9, 2023, at 23:59 UTC, then again from Friday, July 14, 2023, at 00:00 UTC to Sunday, July 16, 2023, at 23:59 UTC.

Delphox cannot normally be encountered in Paldea, and the Delphox appearing during this event has Fairy as its Tera Type. Be prepared—this Pokémon is a formidable foe, and it’s got the Mightiest Mark to prove it! Work together with your friends to topple this powerful Tera Pokémon!

This special Delphox can be caught only once per save data. You can still participate in Tera Raid Battles against this Delphox to obtain other rewards if you’ve already caught it.

This Delphox may be featured in future events or become obtainable through other methods.

Event Schedule

Friday, July 7, 2023, at 00:00 UTC to Sunday, July 9, 2023 at 23:59 UTC
Friday, July 14, 2023, at 00:00 UTC to Sunday, July 16, 2023, at 23:59 UTC

Featured Pokémon

7-star Tera Raid Battles: Delphox with the Mightiest Mark

What Is a Tera Raid Battle?

In a Tera Raid Battle, you’ll work together with three other Trainers to defeat a powerful Tera Pokémon before time runs out. The kinds of Pokémon encountered during Tera Raid Battle events will vary. Pokémon encountered in Tera Raid Battles may have a rare Tera Type.

Information about Tera Raid Battle Events

• To participate in Tera Raid Battle events, please download the latest Poké Portal News by selecting Poké Portal from the X menu, then Mystery Gift, then Check Poké Portal News. You do not need a paid Nintendo Switch Online membership to receive the latest Poké Portal News.
• After completing certain postgame events, you’ll be able to find black Tera Raid crystals. However, players who haven’t completed these events may still participate in these Tera Raid Battles by joining other Trainers in multiplayer.
• A paid Nintendo Switch Online membership (sold separately) is required to participate in Tera Raid Battles with other Trainers online. Terms apply.

Source: https://sv-news.pokemon.co.jp/en/page/68.html