yugioh rin deck Complete Custom for Yu-Gi-Oh! VRAINS Yu-Gi-Oh! Episode Decks: Rin's Windwitches

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To get a sense of just how rare these are, there were 18 different cards in the 2014 Duelist League set, and each one was available in one of the four different colours

Not only that, it adds 3 green mana a turn, so if you can play it early, youre going to be ramping like crazy

UR Ultra Rare Outburst Dragon X DARK Level 8 [ DragonEffect ] ATK 2100 DEF 2800 If you control a monster: You can Special Summon this card from your hand, then destroy all other monsters you control, also you cannot Special Summon monsters, except DARK monsters, while this card is face-up in the Monster Zone

Essentially, this allowed the player to routinely summon powerful Pokmon without any setup or real investment, because they didn't need to worry about evolving them