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.

Curse of the Shadow Prison · Duelist Alliance: Deluxe Edition 81788994/7

Curse of the Shadow Prison (Duelist Alliance: Deluxe Edition 81788994/7), Common. Market price $0.11, unchanged this week. Prices are estimates from TCGPlayer and Cardmarket, not guaranteed values.

Each time a "Shaddoll" monster(s) is sent to the GY by a card effect, place 1 Spellstone Counter on this card for each sent monster. All monsters your opponent controls lose 100 ATK for each Spellstone Counter on this card during your opponent's turn only. Each time you Fusion Summon a "Shaddoll" Fusion Monster, you can remove 3 Spellstone Counters from this card to use 1 appropriate face-up monster your opponent controls as 1 of the Fusion Materials.

Weekly price history

Week	Market price
2026-W31	$0.11
2026-W32	$0.11
2026-W33	$0.11
2026-W34	$0.11
2026-W35	$0.11
2026-W36	$0.11
2026-W37	$0.11
2026-W38	$0.11
2026-W39	$0.11

Questions

How much is Curse of the Shadow Prison 81788994/7 worth?

Curse of the Shadow Prison from Duelist Alliance: Deluxe Edition (81788994/7) has a market estimate of $0.11, unchanged this week. Prices are estimates from TCGPlayer and Cardmarket.

Is Curse of the Shadow Prison 81788994/7 rare?

It is a Common from Duelist Alliance: Deluxe Edition, a 7-card set.

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