I don't know your Flygon's set, but I was assuming it's the Choice Scarf set, EQ was the obvious and probably the best choice. It was too early to lock into Outrage, though U-turn could have gotten you out of a bad switch. It would have dealt ~11% to Gyara however, so lefties would shoo the pain away. I think I would of EQ'd as well. I almost kept Heatran in and go for the Dragon Pulse, but I wasn't sure it would KO.