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 Walrein · Double Crisis 5/34

Team Aqua's Walrein (Double Crisis 5/34), Rare, Stage2, 140 HP. Market price €4.75, unchanged this week. Illustrated by Hitoshi Ariga. Prices are estimates from TCGPlayer and Cardmarket, not guaranteed values.

It's good at attacks that freeze opponents with a powerful cold snap. Then, it pulverizes a frozen foe with its sharp tusks!

Card text

Power Blow 30× — This attack does 30 damage times the amount of Energy attached to this Pokémon.
Dual Blizzard — Discard 2 {W} Energy attached to this Pokémon. This attack does 80 damage to 2 of your opponent's Pokémon. (Don't apply Weakness and Resistance for Benched Pokémon.)

Weekly price history

Week	Market price
2026-W31	€4.64
2026-W32	€4.64
2026-W33	€4.64
2026-W34	€5.06
2026-W35	€5.06
2026-W36	€5.02
2026-W37	€4.79
2026-W38	€4.75
2026-W39	€4.75

Questions

How much is Team Aqua's Walrein 5/34 worth?

Team Aqua's Walrein from Double Crisis (5/34) has a market estimate of €4.75, unchanged this week. Prices are estimates from TCGPlayer and Cardmarket.

Is Team Aqua's Walrein 5/34 rare?

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

Is Team Aqua's Walrein 5/34 tournament legal?

Team Aqua's Walrein 5/34 is legal in Expanded.

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