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 ex · Stellar Crown 030/142

Blastoise ex (Stellar Crown 030/142), Double rare, Stage2, 330 HP. Market price €3.10, up 0.3% this week. Illustrated by PLANETA Igarashi. Prices are estimates from TCGPlayer and Cardmarket, not guaranteed values.

Card text

Ability: Solid Shell — This Pokémon takes 30 less damage from attacks (after applying Weakness and Resistance).
Twin Cannons 140× — Discard up to 2 Basic {W} Energy cards from your hand. This attack does 140 damage for each card you discarded in this way.

Weekly price history

Week	Market price
2026-W31	€3.09
2026-W32	€2.98
2026-W33	€3.00
2026-W34	€2.95
2026-W35	€2.93
2026-W36	€3.05
2026-W37	€3.09
2026-W38	€3.09
2026-W39	€3.10

Printings & variants

Holo — $3.33

Questions

How much is Blastoise ex 030/142 worth?

Blastoise ex from Stellar Crown (030/142) has a market estimate of €3.10, up 0.3% this week. Prices are estimates from TCGPlayer and Cardmarket.

Is Blastoise ex 030/142 rare?

It is a Double rare from Stellar Crown, a 142-card set.

Is Blastoise ex 030/142 tournament legal?

Blastoise ex 030/142 is legal in Expanded.

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