Seen this brought up before elsewhere but hoping one day for a developer ruling.
If a mythos card (say "The Evil is Everywhere" for example) appears that opens two gates, and those two gates are already open, do two monster surges occur that mythos phase. It would seem that is so according to base rules, though problems crop up.
Apologies if this was ruled on, checking the compilation thread did not turn up any results.
Discussion now