I challenged Crasher Wake at the Pastoria Gym and defeated his Gyarados with Rotom's Shock Wave attack. I used my Roselia against his Quagsire afterwards and defeated it with Mega Drain, then I slayed Floatzel with Rotom's Thundershock. I received the Fen Badge and Brine TM from Crasher Wake upon winning, then I exited the Pastoria Gym and spoke with Barry about a suspicious Galactic grunt with a bomb. The grunt escaped to Route 213 and I cornered him at Valor Lakefront after meeting Looker. After I slayed him, Cynthia showed up and handed me the SecretPotion. I flew back to Pastoria City and dashed east to Route 212 next. I fought trainers in the muddy swamp and saved halfway through the rainstorm.