Go to Goldenrod city and then go to the underground (if you don't know where that is, just go to the Pokemon centre, then go up to the game corner, go left then down until you cant go down any more. Then go right and there will be a building with a sign outside it. That is the underground). When you walk into the underground, go down the stairs and then go left. If you havent been down here before there will be some trainers you need to fight. After you have done that go to the old woman sitting behind a tabla and you can buy them off her.
Chat with our AI personalities
It's in the Goldenrod City Underground, but she's only there on the weekend
In the Herb Shop. (I forgot where it was sorry, I think it was Pastoria or maybe Hearthome I'm not sure)
No the happiness only lowers if you give the Pokemon herbal medicine (Revival Herb, Energy Root, Heal Powder, and Energypowder) or if the Pokemon faints in battle.
Cynthia has a different variety of Pokemon, unlike the Elite Four. She has strong Pokemon but not unbeatable. I suggest you have a strong fire and water type for about 4 of her Pokemon. Also, I found it easier to have a flying Pokemon with a quick claw and a Lucario with ExtremeSpeed. Just act as though she is a normal trainer and have a Max revival or a revival herb to hand.
no you can trade soulsilver pokemon to black