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?

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Is collaborative deck building free?

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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.

Mismagius · Undaunted 19/90

Mismagius (Undaunted 19/90), Rare, Stage1, 80 HP. Market price €1.13, up 2.7% this week. Illustrated by Suwama Chiaki. Prices are estimates from TCGPlayer and Cardmarket, not guaranteed values.

Its cries sound like incantations to torment the foe. It appears where you least expect it.

Card text

Sleeping Spell 30 — Flip a coin. If heads, the Defending Pokémon is now Asleep.
Poltergeist 30× — Look at your opponent's hand. This attack does 30 damage times the number of Trainer, Supporter, and Stadium cards in your opponent's hand.]

Weekly price history

Week	Market price
2026-W31	€0.95
2026-W32	€1.07
2026-W33	€1.07
2026-W34	€1.08
2026-W35	€1.08
2026-W36	€1.10
2026-W37	€1.10
2026-W38	€1.10
2026-W39	€1.13

Printings & variants

Normal — $2.36
Reverse Holo — $3.38

Questions

How much is Mismagius 19/90 worth?

Mismagius from Undaunted (19/90) has a market estimate of €1.13, up 2.7% this week. Prices are estimates from TCGPlayer and Cardmarket.

Is Mismagius 19/90 rare?

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

Is Mismagius 19/90 tournament legal?

Mismagius 19/90 has rotated out of the current formats.

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