The activation and effects of "Altergeist" cards activated on your field cannot be negated. When your opponent activates a monster effect: You can send 1 other face-up "Altergeist" card you control to the GY; Negate the activation, and if you do, destroy it. You can only use this effect of "Altergeist Protocol" once per turn.
![Altergeist Protocol [SP18-EN048] Common](http://www.cardmerchanttakapuna.co.nz/cdn/shop/products/ea8596e9-a008-57df-a512-19135ddc8620.png?v=1698557278&width=1445)