Zeraora-GX, Thunder Mountain Prism Star from ‘Lost Thunder!’ By: Water Pokémon Master · Posted Posted onSep 19, 2018 at 8:45 AM · 0 Comments The first two English cards from Lost Thunder have been revealed — Zeraora-GX (#86/214) and Thunder Mountain Prism Star (#191/214)! Lost Thunder prereleases will take place from October 20th to October 28th. The set will then hit store shelves on November 2nd. It will be the largest set in the game’s history with over 210 cards coming from three Japanese sets — SM7a Thunderclap Spark, SM7b Fairy Rise, and SM8 Explosive Impact. You can see all of the English set’s product images in this news story.