Steven will have a Skarmory, Claydol, Cradily, Armaldo, Aggron and Metagross. Check Bulbapedia for more details :-)
I believe you can get the rematch with Steven in emerald by battling the Elite four again.After that you can battle Steven.
you can't get the black flute in leaf green but you can in Pokemon ruby, sapphire and emerald then trade it to leaf green.
Steven doesn't give you a pickaxe, but he gives you a Beldum...
Mossdeep City............
go to mossdeep city then head left and go past the white rock at the end their should be a house with a fisherman in it and he will give it to you
latios and latias appear in random patches of grass and areas of water after you catch Rayquaza or make him faint.(after saving the world in Sootopolis.)
In Pokemon Emerald, Steven is no longer the Champion. He has been replaced by Wallace, former Sootopolis City Gym Leader. Wallace is replaced by Juan. Steven plays a different part in the story.
...... stewen in emerald isn't a elite champion. there is wallace.
You have to get the Devon Scope from Steven.
in the cave by the ocean!
Try to complete your Pokédex.
You get it from Steven Stone in Mossdeep city.