the fire duo against Darkness
Fire duo seems like our best bet vs darkness. If we do use a fire duo here, we should consider upgrading rage elixirs (since Torb would likely upgrade dragons to 6 hp).
Other possibility here is a pure grabow, but our grabow is not as good as their grabow and loses to their PU-LS dragon deck as well.
a dimshield duo with mummies versus Earth
Dim shield duo seems reasonable vs earth unless they use the gravity duo vs us (which seems a bit unlikely).
a modified Anti-Fire against Fire
My pick vs fire is a fractal deck with 3 viruses + 4 bone walls for defense and mummies for offense. Otherwise, I guess the anti-fire might work here.
This leaves a grabow versus Aether which is just fine by me.
EQs are our best hope vs aether, either in a grabow or in a modified earth stall (which becomes free if we use fractal vs fire).
If we don't use fractal vs fire, we could consider straight-up fractal here. We'd lose to pestal and dim shields, but we don't have many good counters left vs aether.