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 Muk · Double Crisis 8/34

Team Aqua's Muk (Double Crisis 8/34), Rare, Stage1, 110 HP. Market price €4.62, up 2.0% this week. Illustrated by Kouki Saitou. Prices are estimates from TCGPlayer and Cardmarket, not guaranteed values.

It immobilizes its opponents by wrapping them in its huge, poisonous body. It'll smoosh you, too!

Card text

Ability: Sludge Festival — The Retreat Cost of each Pokémon in play (except for Team Aqua Pokémon) is {C} more.
Pester 60＋ — If your opponent's Active Pokémon is affected by a Special Condition, this attack does 60 more damage.

Weekly price history

Week	Market price
2026-W31	€4.39
2026-W32	€4.39
2026-W33	€4.32
2026-W34	€4.42
2026-W35	€4.42
2026-W36	€4.49
2026-W37	€4.57
2026-W38	€4.53
2026-W39	€4.62

Questions

How much is Team Aqua's Muk 8/34 worth?

Team Aqua's Muk from Double Crisis (8/34) has a market estimate of €4.62, up 2.0% this week. Prices are estimates from TCGPlayer and Cardmarket.

Is Team Aqua's Muk 8/34 rare?

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

Is Team Aqua's Muk 8/34 tournament legal?

Team Aqua's Muk 8/34 is legal in Expanded.

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