pokemon booster boxs Pokemon: Perfect Order Box – Mystic TCG joined by Dragonite V Pokemon Mega Pitch Black Booster

A "K9" Xyz Monster that has this card as material gains this effect

But that downside isnt really a downside, as in the Abyss Rising format, you would just use the monsters for material for Xyz Monsters such as Madolche Queen Tiaramisu , Leviair the Sea Dragon , Wind-Up Zenmaines , or other Rank 3s and 4s

Uniformity Exception: CXyz Barian Hope is the last monster of the archetype to be introduced in the anime, and differs from the rest of them in that it can be summoned by Xyz Evolution without a Rank-Up-Magic card, and lacks a base form (though it can be argued that the Number C10X monsters are its base forms)

As chances are, youll lose your strongest card

Basically if the original card is legal, the promo is also okay to be played in that format

fanbase for years now due to obvious reasons