Centiskorch will be a store promo for GameStop. This looks to be similar to the Copperajah store promo from August.
Pokecario04 spotted this promotion in a GameStop US store. You have to buy $15 worth of Pokémon TCG Products. So far as I can tell, GameStop has not published this promotion online yet, also not in their Weekly Ad. We expect more information soon. EB Games Candaa last time got Copperajah too, but there is no info about this specific Centiskorch promo too.
Apparently this is looks like a non-holo regular sized Centiskorch card from Sword & Shield Base set. Centiskorch from the aforementioned set, is also a rare non-holo card. This promotion lasts until October 8, of course while supplies last. We will update this article with more images soon.
Thank you Pokecario04 for informing us!
Spend $15 on any Pokémon TCG products at GameStop.