Quoted By:
Smeargle with Mimic: Versatile as I need it to be, infinite potential for it learning how to clean, cook, and other things for overall convenience. Mimic is to help it learn these skills.
Rotom: Appliances galore, versatile powerhouse, can power a home and give it water and heat with its varied forms, no need to pay bills, and great for battle too.
Tropius: Food, flight, shelter with grass, trees, vines, whatever. Invaluable when paired with the other two.
There, survivability perfection.