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.

Koffing · Cosmic Eclipse 243/236

Koffing (Cosmic Eclipse 243/236), Secret Rare, Basic, 60 HP. Market price €25.27, down 3.3% this week. Illustrated by HYOGONOSUKE. Prices are estimates from TCGPlayer and Cardmarket, not guaranteed values.

Its thin, balloon-like body is inflated by horribly toxic gases. It reeks when it is nearby.

Card text

Ability: Blow-Away Bomb — Once during your turn, when you discard this Pokémon with the effect of Roxie, you may put 1 damage counter on each of your opponent’s Pokémon. (Place damage counters after the effect of Roxie.)
Poison Gas 10 — Your opponent’s Active Pokémon is now Poisoned.

Weekly price history

Week	Market price
2026-W31	€26.54
2026-W32	€26.43
2026-W33	€26.53
2026-W34	€27.17
2026-W35	€27.17
2026-W36	€26.49
2026-W37	€26.02
2026-W38	€26.12
2026-W39	€25.27

Questions

How much is Koffing 243/236 worth?

Koffing from Cosmic Eclipse (243/236) has a market estimate of €25.27, down 3.3% this week. Prices are estimates from TCGPlayer and Cardmarket.

Is Koffing 243/236 rare?

It is a Secret Rare from Cosmic Eclipse, a 236-card set.

Is Koffing 243/236 tournament legal?

Koffing 243/236 is legal in Expanded.

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