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However, some Pokmon attacks, or abilities, and some trainer cards, allow you or instruct you to attach additional energy cards to one or more of your Pokmon

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It was rare that a deck built around ritual summoning would successfully reach the upper echelons of the competitive game, but this deck did so by draining your opponent of resources during a mammoth opening gamut that, without the right hand traps to counter your opponent at the right time, could (very) slowly deck your opponent out before they had a chance to play

Qliphort Stealth provides a removal effect that returns a card to hand when it is Tribute Summoned using a Qli monster(s)