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?

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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.

Marshadow · Cosmic Eclipse 103/236

Marshadow (Cosmic Eclipse 103/236), Rare, Basic, 60 HP. Market price €7.88, up 1.3% this week. Illustrated by 0313. Prices are estimates from TCGPlayer and Cardmarket, not guaranteed values.

It slips into the shadows of others and mimics their powers and movements. As it improves, it becomes stronger than those it's imitating.

Card text

Shadow Imitation — Choose 1 of your opponent’s Active Pokémon’s non-GX attacks and use it as this attack.

Weekly price history

Week	Market price
2026-W31	€7.58
2026-W32	€7.54
2026-W33	€7.54
2026-W34	€7.41
2026-W35	€7.41
2026-W36	€7.39
2026-W37	€7.78
2026-W38	€7.78
2026-W39	€7.88

Printings & variants

Normal — $5.96

Questions

How much is Marshadow 103/236 worth?

Marshadow from Cosmic Eclipse (103/236) has a market estimate of €7.88, up 1.3% this week. Prices are estimates from TCGPlayer and Cardmarket.

Is Marshadow 103/236 rare?

It is a Rare from Cosmic Eclipse, a 236-card set.

Is Marshadow 103/236 tournament legal?

Marshadow 103/236 is legal in Expanded.

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