A Stage 1 Pokemon Card of type Lightning, Metal with the title Gyarados  and 90 HP of rarity Rare Holo evolved from Magikarp from the set Holon Phantoms.  It has the attack Hyper Beam with the cost Metal, Colorless, the energy cost 2 and the damage of 20 with the description: Flip a coin. If heads, discard an Energy card attached to the Defending Pokemon. It has the attack Heavy Impact with the cost Lightning, Metal, Colorless, Colorless, Colorless, the energy cost 5 and the damage of 80. It has the ability Delta Reactor with the description: As long as any Stadium card with Holon in its name is in play, each of your Pokemon that has  on its card does 10 more damage to the Defending Pokemon (before applying Weakness and Resistance). It has weakness against Lightning 2. 
Gyarados δ