A Stage 1 Pokemon Card of type Water with the title Gyarados and 150 HP of rarity Rare Holo evolved from Magikarp from the set Burning Shadows and the flavor text: A tale is told of a town that angered Gyarados. Before the sun rose the next day, flames utterly consumed the town, leaving not a trace behind. It has the attack Venting Anger with the cost Colorless, Colorless, the energy cost 2 and the damage of 50 with the description: This attack does 50 damage for each Magikarp in your discard pile. It has the attack Splash Burn with the cost Water, Water, Colorless, Colorless, the energy cost 4 and the damage of 160 with the description: This attack does 30 damage to each of your Benched Pokemon. (Don't apply Weakness and Resistance for Benched Pokemon.) It has weakness against Lightning 2. 
Gyarados