Flame Vapor (Poké-Power)
When you play Gyarados from your hand to evolve your Active Pokémon, you may flip 2 coins. For each heads, discard an Energy card attached to the Defending Pokémon.
Dragon's Vengeance
Cost: Water, Colorless, Colorless, Colorless (50)
If Gyarados has 7 or more damage counters on it, this attack's base damage is 100.