advanced decks yugioh Dark - Yu-Gi-Oh! Card Database The Best Rogue Advanced Decks

They seem more common in Japanese, although English ones exist as well

Ghoti Chain X TRAP Banish 1 face-up Fish monster you control

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So, after all this, if you're still wondering why players care so much about fetch lands and why you may need to hop on the bandwagon, here's your answer: fetch lands get you reliable mana, and reliable mana wins games

Switch is great because it resets the effect on Gengar VMAXs second attack by pivoting you to the bench