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 · Team Rocket Returns 61/109

Koffing (Team Rocket Returns 61/109), Common, Basic, 50 HP. Market price €0.59, unchanged this week. Illustrated by Midori Harada. Prices are estimates from TCGPlayer and Cardmarket, not guaranteed values.

Koffing (National Pokédex #109) first appeared in Pokémon Red and Green (1996). Its earliest English cards in our catalogue are from 1999: Base Set.

More Koffing printings

Card text

Poke-BODY: Knockout Gas — If Koffing is your Active Pokémon and is Knocked Out by an opponent's attack, the Attacking Pokémon is now Confused and Poisoned.
Gnaw 10

Weekly price history

Week	Market price
2026-W31	€0.29
2026-W32	€0.31
2026-W33	€0.31
2026-W34	€0.38
2026-W35	€0.38
2026-W36	€0.40
2026-W37	€0.40
2026-W38	€0.59
2026-W39	€0.59
2026-W40	€0.59

Printings & variants

Normal — $0.92
Reverse Holo — $43.50

Price in context

Koffing ranks #103 of the 108 priced cards in Team Rocket Returns. The median Common in the set is €1.09. The 108 priced cards in Team Rocket Returns are worth €4946.81 together; this card is less than 0.1% of that. The set’s value is unchanged this week. Over the last 10 weeks the set’s value went from €3829.23 to €4946.81 (+29.2%).

Top chases in Team Rocket Returns

Rocket's Mewtwo ex 99 — €1214.87
Rocket's Articuno ex 96 — €616.53
Rocket's Snorlax ex 104 — €460.72
Rocket's Suicune ex 105 — €330.24
Rocket's Entei ex 97 — €238.05

Set value over 10 weeks · same 108 cards each week
Week	Set value
2026-W31	€3829.23
2026-W32	€4131.94
2026-W33	€4137.53
2026-W34	€4212.16
2026-W35	€4212.72
2026-W36	€5033.83
2026-W37	€5021.78
2026-W38	€5038.42
2026-W39	€4946.81
2026-W40	€4946.81