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You can Tribute this card, then reveal 1 Machine monster in your hand; add 1 Machine monster with a different Attribute from your Deck to your hand, then if you added a monster with 1200 or less ATK, you can Special Summon 1 Machine monster from your hand. If a monster(s) in your possession is destroyed by card effect, while this card is in your GY (except during the Damage Step): You can banish this card; destroy 1 card on the field. You can only use each effect of "Gray Layer" once per turn.

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