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.

Demystify · Eighth Edition 16★/711

Demystify (Eighth Edition 16★/711), Common, Instant. Market price €0.45, up 1.6% this week. Illustrated by Christopher Rush. Prices are estimates from TCGPlayer and Cardmarket, not guaranteed values.

First printed in Onslaught on 7 October 2002.

More Demystify printings

Weekly price history

Over the last 11 weeks it has sold for between €0.28 and €0.45. That is up 37.4% from €0.32 10 weeks ago. Right now it is at its highest tracked price.

Week	Market price
2026-W31	€0.32
2026-W32	€0.32
2026-W33	€0.29
2026-W34	€0.28
2026-W35	€0.28
2026-W36	€0.43
2026-W37	€0.43
2026-W38	€0.43
2026-W39	€0.44
2026-W40	€0.44
2026-W41	€0.45

Price in context

Demystify ranks #331 of the 701 priced cards in Eighth Edition. The median Common in the set is €0.29. The 701 priced cards in Eighth Edition are worth €2579.61 together; this card is less than 0.1% of that. The set’s value is up 2.1% this week. Over the last 11 weeks the set’s value went from €2399.49 to €2549.97 (+6.3%).

Top chases in Eighth Edition

Birds of Paradise 233★ — €284.72
Grave Pact 137★ — €175.22
City of Brass 322★ — €149.46
Intruder Alarm 86★ — €96.39
Curiosity 72★ — €61.29

Set value over 11 weeks · same 667 cards each week
Week	Set value
2026-W31	€2399.49
2026-W32	€2367.84
2026-W33	€2369.12
2026-W34	€2386.22
2026-W35	€2373.86
2026-W36	€2360.69
2026-W37	€2369.34
2026-W38	€2377.52
2026-W39	€2354.45
2026-W40	€2498.25
2026-W41	€2549.97