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.

Fallen Sanctuary · Ghosts From the Past: The 2nd Haunting 90312154/187

Fallen Sanctuary (Ghosts From the Past: The 2nd Haunting 90312154/187), Ultra Rare. Market price $0.23, unchanged this week. Prices are estimates from TCGPlayer and Cardmarket, not guaranteed values.

When this card is activated: Set 1 "The Sanctuary in the Sky", or 1 Spell/Trap that mentions it, directly from your Deck. This card's name becomes "The Sanctuary in the Sky" while on the field or in the GY. You can banish 1 Fairy monster from your GY, then target 1 Effect Monster your opponent controls; negate its effects until the end of this turn (even if this card leaves the field). You can only use this effect of "Fallen Sanctuary" once per turn. You can only activate 1 "Fallen Sanctuary" per turn.

Weekly price history

Week	Market price
2026-W31	$0.19
2026-W32	$0.18
2026-W33	$0.18
2026-W34	$0.20
2026-W35	$0.20
2026-W36	$0.20
2026-W37	$0.22
2026-W38	$0.23
2026-W39	$0.23

Questions

How much is Fallen Sanctuary 90312154/187 worth?

Fallen Sanctuary from Ghosts From the Past: The 2nd Haunting (90312154/187) has a market estimate of $0.23, unchanged this week. Prices are estimates from TCGPlayer and Cardmarket.

Is Fallen Sanctuary 90312154/187 rare?

It is an Ultra Rare from Ghosts From the Past: The 2nd Haunting, a 187-card set.

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