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 GX · Shining Legends 78/73

Mewtwo GX (Shining Legends 78/73), Secret Rare, 190 HP. Market price €8.23, up 4.6% this week. Illustrated by Mitsuhiro Arita. Prices are estimates from TCGPlayer and Cardmarket, not guaranteed values.

Card text

Full Burst 30× — This attack does 30 damage times the amount of Energy attached to this Pokémon.
Super Absorption 60 — Heal 30 damage from this Pokémon.
Psystrike GX 200 — This attack’s damage isn’t affected by any effects on your opponent’s Active Pokémon. (You can’t use more than 1 GX attack in a game.)

Weekly price history

Week	Market price
2026-W31	€7.79
2026-W32	€7.61
2026-W33	€7.75
2026-W34	€7.95
2026-W35	€8.08
2026-W36	€8.19
2026-W37	€8.02
2026-W38	€7.87
2026-W39	€8.23

Questions

How much is Mewtwo GX 78/73 worth?

Mewtwo GX from Shining Legends (78/73) has a market estimate of €8.23, up 4.6% this week. Prices are estimates from TCGPlayer and Cardmarket.

Is Mewtwo GX 78/73 rare?

It is a Secret Rare from Shining Legends, a 73-card set.

Is Mewtwo GX 78/73 tournament legal?

Mewtwo GX 78/73 is legal in Expanded.

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