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.

Mewtwo · Base Set 10/102

Mewtwo (Base Set 10/102), Rare, Basic, 60 HP. Market price €36.83, up 9.5% this week. Illustrated by Ken Sugimori. Prices are estimates from TCGPlayer and Cardmarket, not guaranteed values.

A scientist created this Pokémon after years of horrific gene-splicing and DNA engineering experiments.

Card text

Psychic 10+ — Does 10 damage plus 10 more damage for each Energy card attached to the Defending Pokémon.
Barrier — Discard 1 Energy card attached to Mewtwo in order to use this attack. During your opponent's next turn, prevent all effects of attacks, including damage, done to Mewtwo.

Weekly price history

Week	Market price
2026-W31	€22.71
2026-W32	€25.30
2026-W33	€24.95
2026-W34	€23.01
2026-W35	€23.22
2026-W36	€24.58
2026-W37	€25.38
2026-W38	€33.63
2026-W39	€36.83

Printings & variants

Holo — $92.88

Questions

How much is Mewtwo 10/102 worth?

Mewtwo from Base Set (10/102) has a market estimate of €36.83, up 9.5% this week. Prices are estimates from TCGPlayer and Cardmarket.

Is Mewtwo 10/102 rare?

It is a Rare from Base Set, a 102-card set.

Is Mewtwo 10/102 tournament legal?

Mewtwo 10/102 has rotated out of the current formats.

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