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.

Cosmog · Celebrations 13/25

Cosmog (Celebrations 13/25), Rare, Basic, 60 HP. Market price €0.18, up 12.5% this week. Illustrated by kirisAki. Prices are estimates from TCGPlayer and Cardmarket, not guaranteed values.

Whether or not it's a Pokémon from this world is a mystery. When it's in a jam, it warps away to a safe place to hide.

Card text

Star Protection — Flip a coin. If heads, during your opponent's next turn, prevent all damage done to this Pokémon by attacks.

Weekly price history

Week	Market price
2026-W31	€0.16
2026-W32	€0.16
2026-W33	€0.16
2026-W34	€0.14
2026-W35	€0.14
2026-W36	€0.14
2026-W37	€0.15
2026-W38	€0.16
2026-W39	€0.18

Printings & variants

Holo — $0.37

Questions

How much is Cosmog 13/25 worth?

Cosmog from Celebrations (13/25) has a market estimate of €0.18, up 12.5% this week. Prices are estimates from TCGPlayer and Cardmarket.

Is Cosmog 13/25 rare?

It is a Rare from Celebrations, a 25-card set.

Is Cosmog 13/25 tournament legal?

Cosmog 13/25 is legal in Expanded.

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