A Stage 1 Pokemon Card of type Water with the title Misty's Gyarados and 100 HP of rarity Rare Holo evolved from Misty's Magikarp from the set Gym Challenge.  It has the attack Tidal Wave with the cost Water, Water, Water, Water, the energy cost 4 and the damage of 70. It has the ability Rebellion with the description: Whenever Misty's Gyarados attacks, flip 2 coins. If both of them are tails, that attack does nothing. Instead, shuffle Misty's Gyarados and all cards attached to it into your deck. (This power works even if Misty's Gyarados is Confused.) It has weakness against Grass 2. It has resistance against Fighting -30. 
Misty's Gyarados