SM8B PSA 10 Guide
Set History & Release Context
GX Ultra Shiny (ハイクラスパック GXウルトラシャイニー, expansion code sm8b) was released on November 2, 2018 as a Japanese High Class Pack within the Sun & Moon era. The 250-card Japanese set was distilled into the 163-card English Hidden Fates expansion released August 23, 2019 — note that Hidden Fates also incorporated cards from the parallel Dragon Majesty release (Bulbapedia accessed 2026-05-09).
GX Ultra Shiny introduced the inaugural TAG TEAM trio Moltres & Zapdos & Articuno-GX as a marquee mechanic, alongside an extensive Shiny Vault subset featuring more than 75 Pokemon in their Shiny coloration. The Shiny Pokemon-GX cards within the subset received the SSR rarity designation — the highest collectibility tier in the expansion.
SM8B PSA 10 Cards
1 cards
Top Chase Cards Explained
GX Ultra Shiny's chase tier is dominated by the Shiny Pokemon-GX SSR slot. Shiny Charizard-GX SSR is the headline chase card and one of the most valuable Japanese High Class Pack cards ever printed, with PSA 10 graded copies commanding sustained premium pricing. Other Shiny GX SSRs of note include Shiny Mewtwo-GX, Shiny Gyarados-GX, and the Shiny legendary bird trio.
The Moltres & Zapdos & Articuno-GX TAG TEAM debut adds a separate chase axis as the first-ever TAG TEAM card. Beyond the SSR slot, the broader Shiny Vault contains over 75 Shiny Pokemon at varying rarity tiers, supporting deep collector demand across the full set (Bulbapedia accessed 2026-05-09).
Investment Analysis
GX Ultra Shiny's investment angle combines several verifiable factors: it is a Japanese High Class Pack (a premium SKU with higher base price and stronger graded-card yield than standard expansions), it introduced the inaugural TAG TEAM mechanic, and Shiny Charizard-GX SSR is one of the most-graded chase cards of the entire SM era. As a 2018 release now seven-plus years out, sealed Japanese GX Ultra Shiny boxes are increasingly scarce at retail.
Frequently Asked Questions
When was GX Ultra Shiny (sm8b) released?
GX Ultra Shiny released on November 2, 2018 in Japan as a Sun & Moon-era High Class Pack.
What is the English equivalent of GX Ultra Shiny?
Cards from GX Ultra Shiny (combined with Dragon Majesty content) formed the English Hidden Fates expansion released August 23, 2019.
How many cards are in GX Ultra Shiny?
The Japanese set contains 250 cards. The English Hidden Fates counterpart contains 163.
What is the chase card in GX Ultra Shiny?
Shiny Charizard-GX SSR is the headline chase. The full Shiny Pokemon-GX SSR tier and the inaugural Moltres & Zapdos & Articuno-GX TAG TEAM are the premium pulls.
What is the Shiny Vault?
The Shiny Vault is a subset within GX Ultra Shiny featuring over 75 Pokemon in their Shiny coloration, with Shiny Pokemon-GX cards designated SSR rarity.
What new mechanic debuted in GX Ultra Shiny?
GX Ultra Shiny introduced the TAG TEAM mechanic, with Moltres & Zapdos & Articuno-GX as the inaugural card.