Activate only if you control a "Number" monster. "Number" monsters on the field cannot be destroyed by card effects, and cannot be destroyed by battle except with another "Number" monster. When a "Number" monster you control is destroyed, destroy this card.
![Number Wall (NUMH-EN058) [Number Hunters]](http://fafnirshoard.ca/cdn/shop/files/70041_d8bb3bc0-8f76-4b46-825e-1144a58f9cbf.jpg?v=1782776280&width=1445)