Show: All formats Goat Perfect Circle Edison
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.
Select 1 face-up Machine-Type monster you control with 500 or less ATK. You can Special Summon up to 2 cards with the same name 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.
This effect targets 1 face-up Machine-Type monster you control with 500 or less ATK.
A monster with 500 or less ATk whose Type is Machine by DNA Surgery can be targeted.
If the target is flipped face-down / leaves the field, you still Special Summon from the Deck.
If the target has >500 ATK when this effect resolves, you still Special Summon from the Deck.
If the target is not Machine-Type when this effect resolves, you still Special Summon from the Deck.
You cannot target a Machine-Type monster if no cards in your Deck share its name (ex: Tokens).
VS. Proto-Cyber Dragon: You Special Summon up to 2 Cyber Dragons from your Deck while its effect applies, but you can only Special Summon Proto-Cyber Dragon if its effect is negated by (Skill Drain).
(Note: The following ruling is outdated given the current card text.)