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.

Mysterious Fossil · Power Keepers 85/108

Mysterious Fossil (Power Keepers 85/108), Common, 50 HP. Market price €0.32, up 10.3% this week. Illustrated by Ryo Ueda. Prices are estimates from TCGPlayer and Cardmarket, not guaranteed values.

Card text

Play Mysterious Fossil as if it were a Basic Pokémon. While in play, Mysterious Fossil counts as a Colorless Pokémon (as well as a Trainer card). Mysterious Fossil has no attacks of its own, can't retreat, and can't be affected by any Special Conditions. If Mysterious Fossil is Knocked Out, it doesn't count as a Knocked Out Pokémon. (Discard it anyway.) At any time during your turn before your attack, you may discard Mysterious Fossil from play.

Weekly price history

Week	Market price
2026-W31	€0.22
2026-W32	€0.24
2026-W33	€0.24
2026-W34	€0.23
2026-W35	€0.24
2026-W36	€0.27
2026-W37	€0.29
2026-W38	€0.29
2026-W39	€0.32

Printings & variants

Normal — $0.57

Questions

How much is Mysterious Fossil 85/108 worth?

Mysterious Fossil from Power Keepers (85/108) has a market estimate of €0.32, up 10.3% this week. Prices are estimates from TCGPlayer and Cardmarket.

Is Mysterious Fossil 85/108 rare?

It is a Common from Power Keepers, a 108-card set.

Is Mysterious Fossil 85/108 tournament legal?

Mysterious Fossil 85/108 has rotated out of the current formats.

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