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?

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Is collaborative deck building free?

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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.

Team Aqua's Carvanha · Double Crisis 20/34

Team Aqua's Carvanha (Double Crisis 20/34), Common, Basic, 50 HP. Market price €2.95, up 1.7% this week. Illustrated by Sanosuke Sakuma. Prices are estimates from TCGPlayer and Cardmarket, not guaranteed values.

You can't keep up with its movements underwater, can you? If you get caught in this whirlpool, there'll be no escape.

Card text

Fin Smack 10× — Flip 2 coins. This attack does 10 damage times the number of heads.

Weekly price history

Week	Market price
2026-W31	€2.82
2026-W32	€2.76
2026-W33	€2.76
2026-W34	€2.79
2026-W35	€2.79
2026-W36	€2.77
2026-W37	€2.90
2026-W38	€2.90
2026-W39	€2.95

Printings & variants

Normal — $0.73

Questions

How much is Team Aqua's Carvanha 20/34 worth?

Team Aqua's Carvanha from Double Crisis (20/34) has a market estimate of €2.95, up 1.7% this week. Prices are estimates from TCGPlayer and Cardmarket.

Is Team Aqua's Carvanha 20/34 rare?

It is a Common from Double Crisis, a 34-card set.

Is Team Aqua's Carvanha 20/34 tournament legal?

Team Aqua's Carvanha 20/34 is legal in Expanded.

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