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.

Danger! Thunderbird! · Soul Fusion Special Edition 90807199/4

Danger! Thunderbird! (Soul Fusion Special Edition 90807199/4), Secret Rare. Market price $0.21, unchanged this week. Prices are estimates from TCGPlayer and Cardmarket, not guaranteed values.

You can reveal this card in your hand; your opponent randomly chooses 1 card from your entire hand, then you discard the chosen card. Then, if the discarded card was not "Danger! Thunderbird!", Special Summon 1 "Danger! Thunderbird!" from your hand, and if you do, draw 1 card. If this card is discarded: You can target 1 Set card your opponent controls; destroy it. You can only use this effect of "Danger! Thunderbird!" once per turn.

Weekly price history

Week	Market price
2026-W31	$0.21
2026-W32	$0.21
2026-W33	$0.21
2026-W34	$0.20
2026-W35	$0.20
2026-W36	$0.20
2026-W37	$0.21
2026-W38	$0.21
2026-W39	$0.21

Questions

How much is Danger! Thunderbird! 90807199/4 worth?

Danger! Thunderbird! from Soul Fusion Special Edition (90807199/4) has a market estimate of $0.21, unchanged this week. Prices are estimates from TCGPlayer and Cardmarket.

Is Danger! Thunderbird! 90807199/4 rare?

It is a Secret Rare from Soul Fusion Special Edition, a 4-card set.

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