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.

Rotom · Undaunted 20/90

Rotom (Undaunted 20/90), Rare, Basic, 60 HP. Market price €1.05, up 10.5% this week. Illustrated by MAHOU. Prices are estimates from TCGPlayer and Cardmarket, not guaranteed values.

Research continues on this Pokémon, which could be the power source of a unique motor.

Card text

Poke-POWER: Mischievous Trick — Once during your turn (before your attack), you may switch 1 of your face-down Prize cards with the top card of your deck. This power can't be used if Rotom is affected by a Special Condition.
Plasma Arrow — Choose 1 of your opponent's Pokémon. This attack does 20 damage for each Energy attached to that Pokémon. This attack's damage isn't affected by Weakness or Resistance.

Weekly price history

Week	Market price
2026-W31	€1.16
2026-W32	€1.07
2026-W33	€1.09
2026-W34	€1.06
2026-W35	€1.10
2026-W36	€1.07
2026-W37	€0.97
2026-W38	€0.95
2026-W39	€1.05

Printings & variants

Normal — $10.42
Reverse Holo — $28.50

Questions

How much is Rotom 20/90 worth?

Rotom from Undaunted (20/90) has a market estimate of €1.05, up 10.5% this week. Prices are estimates from TCGPlayer and Cardmarket.

Is Rotom 20/90 rare?

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

Is Rotom 20/90 tournament legal?

Rotom 20/90 has rotated out of the current formats.

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