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.

Theinen the Great Sphinx · Kids WB Duel of Destiny promotional card 87997872/1

Theinen the Great Sphinx (Kids WB Duel of Destiny promotional card 87997872/1), Ultra Rare. Market price $0.47, down 4.1% this week. Prices are estimates from TCGPlayer and Cardmarket, not guaranteed values.

This card cannot be Normal Summoned or Set. This card cannot be Special Summoned except by paying 500 Life Points when both "Andro Sphinx" and "Sphinx Teleia" on your side of the field are destroyed at the same time; then you can Special Summon this monster from your hand or Deck. When this card is Special Summoned, by paying 500 Life Points, increase the ATK of this card by 3000 points until the end of the End Phase.

Weekly price history

Week	Market price
2026-W31	$0.61
2026-W32	$0.56
2026-W33	$0.52
2026-W34	$0.54
2026-W35	$0.54
2026-W36	$0.51
2026-W37	$0.49
2026-W38	$0.49
2026-W39	$0.47

Questions

How much is Theinen the Great Sphinx 87997872/1 worth?

Theinen the Great Sphinx from Kids WB Duel of Destiny promotional card (87997872/1) has a market estimate of $0.47, down 4.1% this week. Prices are estimates from TCGPlayer and Cardmarket.

Is Theinen the Great Sphinx 87997872/1 rare?

It is an Ultra Rare from Kids WB Duel of Destiny promotional card, a 1-card set.

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