A Stage 1 Pokemon Card of type Water, Darkness with the title Dark Gyarados and 80 HP of rarity Uncommon evolved from Magikarp from the set Team Rocket Returns.  It has the attack Sharp Fang with the cost Water, Colorless, the energy cost 2 and the damage of 30. It has the attack Dark Streak with the cost Water, Colorless, Colorless, the energy cost 3 and the damage of 40 with the description: Flip a coin. If heads, each Defending Pokemon is now Paralyzed. It has the ability Dark Scale with the description: If Dark Gyarados is your Active Pokemon and is Knocked Out by an opponent's attack, put 3 damage counters on the Attacking Pokemon. It has weakness against Lightning 2. It has resistance against Fighting -30. 
Dark Gyarados