
SM Black Star Promos · #SM50
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Pokémon-GX rule: When your Pokémon-GX is Knocked Out, your opponent takes 2 Prize cards.
Abilities, attacks, weakness & resistance
When you play this Pokémon from your hand onto your Bench during your turn, you may move any number of Lightning Energy from your other Pokémon to this Pokémon. If you do, switch this Pokémon with your Active Pokémon.
This attack does 50 damage times the amount of Energy attached to all of your opponent's Pokémon. (You can't use more than 1 GX attack in a game.)
Other cards from SM Black Star Promos

Garchomp & Giratina-GX (Holofoil)

Pikachu & Zekrom-GX (Jumbo)

Pikachu & Zekrom-GX (Holofoil)

Reshiram & Charizard-GX (Jumbo)

Reshiram & Charizard-GX (Holofoil)

Sabrina & Brycen

Mismagius

Aipom

Regigigas (Holofoil)

Eevee-GX (Holofoil)

Umbreon & Darkrai-GX (Jumbo)

Umbreon & Darkrai-GX (Holofoil)
Tapu Koko-GX (SM50) is a Lightning Basic Pokémon-GX promo from the SM Black Star Promos set and is printed as a Holofoil variant. It has the Aero Trail Ability allowing you to move Lightning Energy from your other Pokémon when you play it onto your Bench and optionally switch it with your Active Pokémon. Its attacks include Sky-High Claws for heavy single-target damage and a GX attack, Tapu Thunder-GX, which scales damage by Energy attached to all of your opponent’s Pokémon.
Catalog pricing data as of 22 Apr 2026, 10:46
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