Can I build a deck together with friends on TCGSwap?

Yes. Every deck on TCGSwap has a Collaboration Space. You can invite up to 5 friends; they can suggest card changes, discuss ideas, and playtest proposals. You review and apply suggestions before anything changes in your deck.

How does deck collaboration work?

It works like a pull request for your deck. Collaborators open the deck editor, make their proposed changes, and submit a suggestion with a note. You get notified, open the comparison view to see exactly what they changed, and choose to apply all, cherry-pick individual cards, or decline. Nothing changes in your deck until you approve it.

Can collaborators chat and discuss the deck?

Yes. The Collaboration Space has a shared group discussion thread for the whole deck, plus a per-suggestion Q&A thread for each proposal. You can @mention teammates and link specific cards inline.

Is collaborative deck building free?

Yes, collaboration is free for all TCGSwap users during beta. You can invite up to 5 collaborators per deck.

Does TCGSwap work for MTG, Pokémon, Yu-Gi-Oh and One Piece collaboration?

Yes. The Collaboration Space supports all four games — Magic: The Gathering, Pokémon TCG, Yu-Gi-Oh and One Piece. Format validation and card prices are included for each game.

Blastoise GX · SM Black Star Promos SM189/248

Blastoise GX (SM Black Star Promos SM189/248), Promo, 240 HP. Market price €17.93, unchanged this week. Illustrated by sadaji. Prices are estimates from TCGPlayer and Cardmarket, not guaranteed values.

Blastoise (National Pokédex #9) first appeared in Pokémon Red and Green (1996). Its earliest English cards in our catalogue are from 1999: Base Set.

More Blastoise GX printings

Blastoise GX · Unbroken Bonds — €80.74
Blastoise GX · Unbroken Bonds — €15.21

Card text

Ability: Solid Shell — This Pokémon takes 30 less damage from attacks (after applying Weakness and Resistance).
Rocket Splash 60× — Shuffle any amount of Water Energy from your Pokémon into your deck. This attack does 60 damage for each card you shuffled into your deck in this way.
Giant Geyser GX — Attach any number of Water Energy cards from your hand to your Pokémon in any way you like. (You can’t use more than 1 GX attack in a game.)

Weekly price history

Week	Market price
2026-W36	€18.07
2026-W37	€18.07
2026-W38	€18.07
2026-W39	€17.93
2026-W40	€17.93

Printings & variants

Holo — $22.20

Price in context

Blastoise GX ranks #74 of the 248 priced cards in SM Black Star Promos. The median Promo in the set is €9.17. The 248 priced cards in SM Black Star Promos are worth €7244.85 together; this card is 0.25% of that. The set’s value is unchanged this week.

Top chases in SM Black Star Promos

Pikachu SM162 — €243.83
Champions Festival SM148 — €161.44
Champions Festival SM78 — €161.44
Moltres & Zapdos & Articuno GX SM210 — €124.42
Charizard SM158 — €124.08

Other Blastoise GX cards

There are 2 other cards named Blastoise GX across 1 set.

Unbroken Bonds 218 (2019) · Secret Rare — €80.74
Unbroken Bonds 35 (2019) · Ultra Rare — €15.21

About the illustrator

sadaji has illustrated 45 cards across 17 sets.

Quick Ball · Sword & Shield — €15.46
U-Turn Board · Unified Minds — €12.69
Honchkrow GX · Unbroken Bonds — €12.08
Ultra Ball · Brilliant Stars — €10.26
Reset Stamp · Unified Minds — €8.95
Fog Crystal · Chilling Reign — €6.11
Island Challenge Amulet · Cosmic Eclipse — €5.92
Egg Incubator · Pokémon GO — €5.34
Fan of Waves · Chilling Reign — €4.63
Rugged Helmet · Chilling Reign — €4.49

More from SM Black Star Promos

← Previous card: Kangaskhan GX SM188 · Next card: Detective Pikachu SM190 →

Questions

How much is Blastoise GX SM189/248 worth?

Blastoise GX from SM Black Star Promos (SM189/248) has a market estimate of €17.93, unchanged this week. Prices are estimates from TCGPlayer and Cardmarket.

Is Blastoise GX SM189/248 rare?

It is a Promo from SM Black Star Promos, a 248-card set.

Is Blastoise GX SM189/248 tournament legal?

Blastoise GX SM189/248 is legal in Expanded.

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