>Major food and water shortage
>Survivors squabble for what little resources are left
Which mon, stats aside, would help you survive until the dust settles, or maybe even thrive?
>inb4 anything with Sand Stream so the dust never settles
Pic unrelated, it's just a random one from my pokemon folder
Shouldn't you be in school right now? Kids shouldn't skip school.
Tropius is a good initial pokemon for banana neck and flight.
Charizard would be another good one for flight and fire.
If we're allowing legend,s then Volcanion would be the best because steam is pure water so you would never go thirsty, could cook nearly anything, would always have heat in one form or another, and it wouldn't be bothered by rain. Not only that but you could start your own little community because clean water and heat are everything.
>Shouldn't you be in school right now? Kids shouldn't skip school.
Not sure what you're problem is. OP didn't specify if legendaries are prohibited or not. Obviously Mega fug and Arceus would be the most logical choices, based on the lore.