Tera Types are a new mechanic introduced in Pokmon Scarlet and Violet. They allow you to change the type of your Pokmon, giving it a new set of strengths and weaknesses. This can be a powerful tool in battle, as it allows you to tailor your Pokmon’s type to match the opponent you’re facing.
To change your Pokmon’s Tera Type, you’ll need to use a Tera Shard. These items can be found throughout the Paldea region, and they come in 18 different types. Once you have a Tera Shard, you can use it at a Pokmon Center to change your Pokmon’s Tera Type.