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.

Duosion · Legendary Treasures 75/113

Duosion (Legendary Treasures 75/113), Uncommon, Stage1, 60 HP. Market price €0.78, unchanged this week. Illustrated by Suwama Chiaki. Prices are estimates from TCGPlayer and Cardmarket, not guaranteed values.

Since they have two divided brains, at times they suddenly try to take two different actions at once.

Duosion (National Pokédex #578) first appeared in Pokémon Black and White (2010). Its earliest English cards in our catalogue are from 2011: Black & White, Noble Victories.

More Duosion printings

Card text

Rollout 20

Weekly price history

Week	Market price
2026-W31	€0.58
2026-W32	€0.58
2026-W33	€0.63
2026-W34	€0.68
2026-W35	€0.68
2026-W36	€0.72
2026-W37	€0.73
2026-W38	€0.73
2026-W39	€0.78
2026-W40	€0.78

Printings & variants

Normal — $0.48

Price in context

Duosion ranks #108 of the 140 priced cards in Legendary Treasures. The median Uncommon in the set is €1.31. The 140 priced cards in Legendary Treasures are worth €1514.28 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 €1403.92 to €1514.28 (+7.9%).

Top chases in Legendary Treasures

Mew-EX RC24 — €193.95
Reshiram 28 — €176.63
Reshiram RC22 — €176.63
Emolga 49 — €69.50
Emolga RC23 — €69.50

Set value over 10 weeks · same 140 cards each week
Week	Set value
2026-W31	€1403.92
2026-W32	€1418.17
2026-W33	€1419.48
2026-W34	€1404.44
2026-W35	€1409.31
2026-W36	€1396.26
2026-W37	€1464.19
2026-W38	€1508.61
2026-W39	€1514.28
2026-W40	€1514.28