Terastal Phenomenon gimmick revealed for Pokémon Scarlet and Violet, changes Pokémon types

gamepur.com:

Pokémon Presents provided more insight into what we can expect when Pokémon Scarlet & Violet comes out on November 18. One of the big highlights was Pokémon turning into shiny gem versions of themselves during battle, which is known as the Terastal phenomenon.

During battle, you will be able to select the Terastallize option to turn your Pokémon into their crystal-like forms (similar to Mega Evolutions or Dynamax Forms). Your character will hold up a stone, and the Pokemon will Terastallize, changing their appearance as the process completes. Terastallize will be available to all Pokémon native to the Paldea region, which already makes it more versatile than Mega Evolution in previous games.

Related: How does Terastallize work in Pokémon Scarlet and Violet? Answered

Terastallizing your Pokémon will provide a boost to your Pokémon’s type and strengthen their move power, in a manner similar to the Same Type Attack Bonus (STAB) that is present throughout Pokémon games. The Type will also overwrite a Pokemon’s current type while it is Terastallized, which can also change its weaknesses mid-battle.

Pokémon can also change their type during Terastallizing, which is dependent on their Tera Type. For example, Pikachu is normally an Electric type, but it is possible for it to become a Flying Type when Terastallizing. Eevee was another example, being able to access Grass or Water typing with its Tera Type without having to evolve into Leafeon or Vaporeon. The Tera Type will also determine the appearance of a Pokémon, with Eevee sprouting flowers as a Grass Tera Type, but it has a crystalline spout as a Water Tera Type.

There wasn’t any information on what part of a Pokémon