According to simulations run on different futures of Ignis and humanity, Revolver says that Lightning's is the only one that leads to mutual destruction.
You can’t activate any card 
effects against this effect!
Gegen diesen Effekt können
keine Karteneffekte eingesetzt werden.
El oponente no puede activar
efectos sobre este.
Você não pode ativar efeitos
de carta contra este efeito.