The Pokémon Company has announced that Delibird will appear in Tera Raid Battles in Pokémon Scarlet and Violet from Friday, December 23, 2022, at 00:00 to Sunday, December 25, 2022, at 23:59 UTC.

Prepare for Presents from Delibird!

Warm Gifts for the Holiday Season! From Friday, December 23rd, 2022 at 00:00 to Sunday, December 25th, 2022 at 23:59 UTC, Delibird will be appearing more frequently in Tera Raid Battles. These Delibird will have various Tera Types, so prepare wisely before challenging them! Defeating Delibird will yield plenty of rewards, and Delibird appearing in 5-star Tera Raid Battles may even reward you with various Tera Shards—special items used to change your Pokémon’s Tera Type. Enjoy the holiday season alongside your Pokémon!

Event Schedule

Friday, December 23, 2022, at 00:00 to Sunday, December 25, 2022, at 23:59 UTC

Featured Pokémon

1-star to 5-star Tera Raid Battles: Delibird

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 encounter Pokémon featured in Tera Raid Battle events, you need to have downloaded the latest Poké Portal News. Poké Portal News will automatically download if your Nintendo Switch™ system is connected to the internet. You can also 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.
• 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/14.html