chinese 151 horizons gem booster box TCG Pokémon Gemstone Box, 15 Packs, 4 Cards Per Pack The CBB1C edition adds a layer of exclusivity S-Chinese) Pokémon TCG: Gem Pack

He said every card should tell you its rarity as well as where it belonged in the set

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Valkyrie Dritte X LIGHT Level 4 [ Fairy / Effect ] ATK 1000 DEF 1600 If this card is Normal or Special Summoned: You can add 1 "Valkyrie" card from your Deck to your hand, except "Valkyrie Dritte"

They can't be Kaiju'd, unless the opponent specifically has the right Attribute Kaiju

There are certainly cards that work fine with both and it can be done but you will either have stuff that does nothing with one half of your engines or you will have a pretty underwhelming Sneak Attack compared to what it can do