If it is flipped face-down, you keep control but it is no longer treated as a Reptile-Type monster.
Activate only when a Reptile-Type monster you control is destroyed by battle with an opponent's attacking monster and sent to the GY. Take control of the attacking monster, and treat it as a Reptile-Type monster.
The destroyed monster must be Reptile-Type while on the field AND in the GY.
Use this card in Substep 7 – End of the Damage Step after placing Trigger Effects on the Chain.
You take control of your opponent’s monster permanently.
This effect does not target.
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.
You can take control of Reptile-Type monsters with this card.
If you control your opponent's Reptile-Type monster and it is destroyed and sent to their GY you can activate "Alien Brain".
In order to activate "Alien Brain" the destroyed monster must be Reptile-Type while on the field and in the GY.