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.

Houndoom · Undaunted 5/90

Houndoom (Undaunted 5/90), Holo Rare, Stage1, 90 HP. Market price €4.60, down 7.1% this week. Illustrated by Kagemaru Himeno. Prices are estimates from TCGPlayer and Cardmarket, not guaranteed values.

Upon hearing its eerie howls, other Pokémon get the shivers and head straight back to their nests.

Card text

Fire Counterattack 20+ — If your opponent has any Fighting Pokémon in play, this attack does 20 damage plus 60 more damage.
Dark Roar 50 — Your opponent discards a card from his or her hand.

Weekly price history

Week	Market price
2026-W31	€7.14
2026-W32	€5.21
2026-W33	€5.21
2026-W34	€5.17
2026-W35	€5.25
2026-W36	€5.13
2026-W37	€4.98
2026-W38	€4.95
2026-W39	€4.60

Printings & variants

Holo — $21.11
Reverse Holo — $35.00

Questions

How much is Houndoom 5/90 worth?

Houndoom from Undaunted (5/90) has a market estimate of €4.60, down 7.1% this week. Prices are estimates from TCGPlayer and Cardmarket.

Is Houndoom 5/90 rare?

It is a Holo Rare from Undaunted, a 90-card set.

Is Houndoom 5/90 tournament legal?

Houndoom 5/90 has rotated out of the current formats.

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