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.

Team Aqua's Secret Base · Double Crisis 28/34

Team Aqua's Secret Base (Double Crisis 28/34), Uncommon. Market price €1.49, down 2.0% this week. Illustrated by Ryo Ueda. Prices are estimates from TCGPlayer and Cardmarket, not guaranteed values.

Card text

The Retreat Cost of each Pokémon in play (except for Team Aqua Pokémon) is {C} more.

Weekly price history

Week	Market price
2026-W31	€1.55
2026-W32	€1.54
2026-W33	€1.54
2026-W34	€1.53
2026-W35	€1.53
2026-W36	€1.52
2026-W37	€1.52
2026-W38	€1.52
2026-W39	€1.49

Printings & variants

Normal — $1.02

Questions

How much is Team Aqua's Secret Base 28/34 worth?

Team Aqua's Secret Base from Double Crisis (28/34) has a market estimate of €1.49, down 2.0% this week. Prices are estimates from TCGPlayer and Cardmarket.

Is Team Aqua's Secret Base 28/34 rare?

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

Is Team Aqua's Secret Base 28/34 tournament legal?

Team Aqua's Secret Base 28/34 is legal in Expanded.

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