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.

Magical Citadel of Endymion · Spellcaster's Command Structure Deck: Special Edition 39910367/1

Magical Citadel of Endymion (Spellcaster's Command Structure Deck: Special Edition 39910367/1), Common. Market price $0.35, down 2.8% this week. Prices are estimates from TCGPlayer and Cardmarket, not guaranteed values.

Each time a Spell Card is activated, place 1 Spell Counter on this card when that Spell resolves. If a card with a Spell Counter(s) is destroyed, place its Spell Counters on this card. Once per turn, if you would activate a card effect by removing a Spell Counter(s) from a card you control, you can remove that many Spell Counters from this card instead. If this card would be destroyed, you can remove 1 Spell Counter from this card instead.

Weekly price history

Week	Market price
2026-W31	$0.33
2026-W32	$0.33
2026-W33	$0.31
2026-W34	$0.31
2026-W35	$0.31
2026-W36	$0.34
2026-W37	$0.33
2026-W38	$0.36
2026-W39	$0.35

Questions

How much is Magical Citadel of Endymion 39910367/1 worth?

Magical Citadel of Endymion from Spellcaster's Command Structure Deck: Special Edition (39910367/1) has a market estimate of $0.35, down 2.8% this week. Prices are estimates from TCGPlayer and Cardmarket.

Is Magical Citadel of Endymion 39910367/1 rare?

It is a Common from Spellcaster's Command Structure Deck: Special Edition, a 1-card set.

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