Card Rules: Rulings powered by The Netrep API. If a monster on the field , with an ATK of 500 or less is changed to Machine-Type with 'DNA Surgery' you can use 'Machine Duplication' to Special Summon up to 2 copies of it from your Deck. The Machine-Type monster is chosen at activation of this card so if the opponent chains 'Ring of Destruction' to destroy the chosen monster up to 2 copies of that card can still be Special Summoned. [Re: Metal Reflect Slime] If 'Metal Reflect Slime' becomes a Machine-Type Monster with 'DNA Surgery' you can select it with 'Machine Duplication' but you will not be able to Special Summon any cards because 'Metal Reflect Slime' is a Trap Card while in your Deck. [Re: Proto-Cyber Dragon] You can use 'Machine Duplication' and a 'Proto-Cyber Dragon' whose ATK has been reduced to 500 or less to Special Summon up to 2 'Cyber Dragons' from your Deck. Passcode: 63995093 Set: Structure Deck Card Number: SD10-EN029 Rarity: Common Attribute: Spell Card Text: Select 1 Machine-Type monster with 500 or less ATK on your side of the field. You can Special Summon up to 2 cards with the same name from your deck. Card Type: Normal Spell Name: Machine Duplication Edition: 1st