Emerald was my first Pokemon RPG, the first I played was Stadium. Yesterday, I beat my friend in it, with this team:
ANYTHING GOES (Lvl. 50)
Rules: No legends
Pokemon: Rental
Me: Gengar, Jolteon, Electabuzz, Exeggutor, Ninetales, Snorlax
Friend: Charizard, Blastoise, Jynx, Raichu, Diglett (his fave Poke), Onix
I royally pwned him, 3-0.