Six and seven-star Cinderace Tera Raids become available upon completing the main game, including five-star raids and all content up until the credits and post-game content. Here’s a guide on accessing these high-level raids:
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How to access the Cinderace Tera Raids:
Once you fulfill the requirements, which include completing the five-star raids and the post-game content, you will see a new marker on your map that confirms that you’re eligible to take part in the six and seven-star Cinderace Tera Raids.
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Simply navigate to the black marker on the map, and you will find a shining crystal that is your doorway to enter the new Cinderace Tera Raids.
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That’s it! If you have any more questions or if there’s anything else you’d like to learn about Pokemon Scarlet and Violet, feel free to ask. Happy raiding!