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.

Yamask · Lost Thunder 99/214

Yamask (Lost Thunder 99/214), Common, Basic, 70 HP. Market price €0.09, down 10.0% this week. Illustrated by Ken Sugimori. Prices are estimates from TCGPlayer and Cardmarket, not guaranteed values.

Each of them carries a mask that used to be its face when it was human. Sometimes they look at it and cry.

Card text

Haunt — Put 1 damage counter on your opponent’s Active Pokémon.

Weekly price history

Week	Market price
2026-W31	€0.11
2026-W32	€0.11
2026-W33	€0.11
2026-W34	€0.09
2026-W35	€0.09
2026-W36	€0.10
2026-W37	€0.10
2026-W38	€0.10
2026-W39	€0.09

Printings & variants

Normal — $0.15

Questions

How much is Yamask 99/214 worth?

Yamask from Lost Thunder (99/214) has a market estimate of €0.09, down 10.0% this week. Prices are estimates from TCGPlayer and Cardmarket.

Is Yamask 99/214 rare?

It is a Common from Lost Thunder, a 214-card set.

Is Yamask 99/214 tournament legal?

Yamask 99/214 is legal in Expanded.

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