Gyarados (Red)/123 - HeartGold SoulSilver Holofoil Number_AR4 Ability Undevelop Once during your

Ability Undevelop Once during your turn (before your attack)

you may look at your opponent's hand

You may play as many Item cards as you like during your turn (before your attack)

If the Pokémon this card is attached to is your Active Pokémon and is damage by an opponent's attack (even if that Pokémon is Knocked Out)

Gyarados (Red)/123 - HeartGold SoulSilver Holofoil Number_AR4 Ability Undevelop Once during yourRarityHolo Rare Card TypePokmon Hit Points130 HP FormStage 1 Evolves from Magikarp TypeWater Colorless Thrash (30+) If heads, this attack does 30 damage plus 20 more damage. If tails, Gyarados does 20 damage to itself. Water,Colorless,Colorless,Colorless Heavy Storm (70) Weakness Lightning 2 Resistance Fighting 20 Retreat CostColorless Retreat CostColorless Retreat CostColorless ArtistWataru Kawahara