1 Death of Choking On A Giant Frog: Wait. The person choking on a giant frog is causing some sort of spatio-temporal paradox.
2 Death of Insanely Overpowered Fireballs: I sense it. And there's about to be an insanely overpowered fireball too.
3 Death of Choking On A Giant Frog: Oh, too bad for you then, Mr Forbidden To Go Near People Killed By Fireballs.
4 Death of Insanely Overpowered Fireballs: But they can't be killed by it... They're already dead!
4 Death of Choking On A Giant Frog: Darn loopholes.

It's tough writing little loopholes like this into an ongoing story arc, since given a large number of readers it's almost guaranteed that some of you will have worked it out before this strip and be wondering why it hadn't been mentioned earlier. If you did, then well done.