Changing a Pokmon’s Tera Type is a new mechanic introduced in Pokmon Scarlet and Violet. It allows players to change the type of their Pokmon, giving them a new set of strengths and weaknesses. This can be a useful strategy in competitive battles, as it can allow players to surprise their opponents and gain an advantage.
To change a Pokmon’s Tera Type, players must first collect 50 Tera Shards of the desired type. These shards can be found by defeating Tera Raid Battles, which are special battles against wild Pokmon that have been infused with Tera energy. Once the player has collected enough shards, they can visit a Pokmon Center and talk to the woman behind the counter to change their Pokmon’s Tera Type.