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.

Gastrodon East Sea · Rising Rivals 21/111

Gastrodon East Sea (Rising Rivals 21/111), Rare, Stage1, 90 HP. Market price €1.02, up 5.2% this week. Illustrated by Ken Sugimori. Prices are estimates from TCGPlayer and Cardmarket, not guaranteed values.

Card text

Poke-BODY: Sticky Hold — If Gastrodon East Sea is switched or retreats to your Bench, move as many Energy cards attached to Gastrodon East Sea as you like to the new Active Pokémon.
Calling Wave — Search your deck for up to 2 Gastrodon and put them onto your Bench as Basic Pokémon. Put 2 damage counters on each of them. Shuffle your deck afterward.
Wave Splash 40

Weekly price history

Week	Market price
2026-W31	€0.93
2026-W32	€0.85
2026-W33	€0.85
2026-W34	€0.85
2026-W35	€0.85
2026-W36	€0.95
2026-W37	€0.97
2026-W38	€0.97
2026-W39	€1.02

Printings & variants

Normal — $2.41
Reverse Holo — $4.96

Questions

How much is Gastrodon East Sea 21/111 worth?

Gastrodon East Sea from Rising Rivals (21/111) has a market estimate of €1.02, up 5.2% this week. Prices are estimates from TCGPlayer and Cardmarket.

Is Gastrodon East Sea 21/111 rare?

It is a Rare from Rising Rivals, a 111-card set.

Is Gastrodon East Sea 21/111 tournament legal?

Gastrodon East Sea 21/111 has rotated out of the current formats.

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