yugioh rainbow dragon deck Structure Deck: Legend of the Crystal Beasts | "Rainbow Overdrive" Release Event Playmat Structure Deck: Legend of the Crystal Beasts | Yu-Gi-Oh! Rainbow Dragon - Yugipedia

In one example, the real cards border is blue and its doppelgangers border is more of a purple shade

You basically toss in cards like Leyline of Anticipation and Vivien, Champion of the Wilds to give your creatures flash, add in some more morphs (although many of the best ones are already in the precon), and you're good to go

That was done intentionally to see who would do the math

The tentacle-like appendages of Deoxys's Attack Forme are detailed with a precision that shows the care that went into the Galarian Gallery artwork, and the holographic elements behind the illustration add a sense of depth that makes it feel like you are looking through a window into another dimension