Alien Brain

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TCG Rulings

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This effect does not target.: Absolute Powerforce - Card Rulings (Version 1.0)

You take control of your opponent's monster permanently. If it is flipped face-down, you keep control but it is no longer treated as a Reptile-Type monster.: Absolute Powerforce - Card Rulings (Version 1.0)

You can take control of Reptile-Type monsters with this card.: Absolute Powerforce - Card Rulings (Version 1.0)

If you control your opponent's Reptile-Type monster and it is destroyed and sent to their Graveyard you can activate "Alien Brain.": Absolute Powerforce - Card Rulings (Version 1.0)

In order to activate "Alien Brain" the destroyed monster must be Reptile-Type while on the field and in the Graveyard.: Absolute Powerforce - Card Rulings (Version 1.0)

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OCG Rulings

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The effect of "Alien Brain" does not target.: Trap Card > Alien Brain

"Alien Brain" can be activated when a monster is sent to the Graveyard only if the monster is a Reptile-Type monster both when it is destroyed on the field and when it is sent to the Graveyard. Thus, if the monster's Type is not treated as Reptile while the monster is on the field because of an effect like "DNA Surgery", or if the monster's Type is not treated as Reptile while the monster is in the Graveyard, then you cannot activate "Alien Brain".: Can "Alien Brain" be activated if the destroyed monster is not a Reptile-Type when it is on the field or in the Graveyard?

If an opponent's Reptile-Type monster attacks and destroys a Reptile-Type monster on your side of the field and sends it to the Graveyard, then you can still activate "Alien Brain". In this case, you still gain control of the opponent's Reptile-Type monster, even though its Type cannot be changed to Reptile.: Can "Alien Brain" be activated if the opponent's Reptile-Type monster destroys?

If you gain control of a monster by the effect of "Alien Brain", then you retain control of the monster as long as the monster remains on the field. The effect which treats the monster's Type as a Reptile is applied as long as the monster remains face-up on the field. Thus, if the monster is later flipped face-down by an effect like "Book of Moon", then the effect which gives you control of the monster is still applied, but the effect which treats its Type as Reptile is no longer applied.: Each effect of "Alien Brain" is applied for how long?