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?

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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 Mightyena · Double Crisis 18/34

Team Aqua's Mightyena (Double Crisis 18/34), Common, Stage1, 100 HP. Market price €3.53, unchanged this week. Illustrated by Mitsuhiro Arita. Prices are estimates from TCGPlayer and Cardmarket, not guaranteed values.

Thanks to Mightyena's outstanding leadership, it's very good at combination attacks that can leave a foe helpless.

Card text

Teampact 30× — Flip a coin for each Team Aqua Pokémon you have in play. This attack does 30 damage times the number of heads.
Crunch 80 — Flip a coin. If heads, discard an Energy attached to your opponent's Active Pokémon.

Weekly price history

Week	Market price
2026-W31	€3.52
2026-W32	€3.55
2026-W33	€3.55
2026-W34	€3.61
2026-W35	€3.61
2026-W36	€3.51
2026-W37	€3.62
2026-W38	€3.53
2026-W39	€3.53

Printings & variants

Normal — $2.77

Questions

How much is Team Aqua's Mightyena 18/34 worth?

Team Aqua's Mightyena from Double Crisis (18/34) has a market estimate of €3.53, unchanged this week. Prices are estimates from TCGPlayer and Cardmarket.

Is Team Aqua's Mightyena 18/34 rare?

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

Is Team Aqua's Mightyena 18/34 tournament legal?

Team Aqua's Mightyena 18/34 is legal in Expanded.

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