Stuff binds to other stuff because the magnetic domains and shape match up well enough. There is no way to effect something that attacks everything it doesn't

Stuff binds to other stuff because the magnetic domains and shape match up well enough. There is no way to effect something that attacks everything it doesn't recognize because a) there is no ooeration that represents not matching and b) if there was such a cell would be a short lived bomb that would blow up your body. You adaptive immune system learns to and antigen when a short lived immune cell is semi randomly generated that binds to it and becomes a longer lived cell. Presumably this could still happen but this normally takes days to happen. In between your inate immune system relies on being able to recognize a lot of existing antigens that are out there and common in attackers. Having the entire library of malicious life become magically unknown means that you are relying on only your adaptive immune system is available to contain the damage.