I entered the Blackthorn City Gym again, and I used the special platforms to move around the lakes of lava within the Gym. I battled some of the other Gym trainers in there, and then I got to Clair's place at the end of the Gym. I then challenged her to a battle, and she sent out her Gyarados. I was prepared with my Ampharos, and I had it use ThunderPunch. That attack was enough to defeat Clair's Gyarados, and she used one of her Dragonair after that. I switched to Piloswine who had recently evolved from Swinub, and I attacked with Blizzard. That caused tons of damage, but Dragonair didn't faint. I had to used Graveler against Dragonair in order to defeat it. I switched out to Wobbuffet after that, and I used it against Clair's Kingdra. Wobbuffet's Mirror Coat attack was useful at first, but Kingdra overpowered it.