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.

Dark Omastar · Neo Destiny 19/105

Dark Omastar (Neo Destiny 19/105), Rare, Stage2, 70 HP. Market price €14.90, up 0.7% this week. Illustrated by Tomokazu Komiya. Prices are estimates from TCGPlayer and Cardmarket, not guaranteed values.

Nothing can escape once wrapped in its tentacles, which it uses for self-defense as well as to catch food.

Card text

Prehistoric Water — If your opponent has any evolved Pokémon in play, choose 1 of them and flip a coin. If heads, your opponent takes the highest Stage Evolution card on that Pokémon and shuffles it into his or her deck.
Dark Tentacle 30 — During your opponent's next turn, the Defending Pokémon can't evolve except from effects of attacks or Pokémon Powers. (Benching that Pokémon ends this effect.)

Weekly price history

Week	Market price
2026-W31	€16.15
2026-W32	€13.52
2026-W33	€14.48
2026-W34	€15.14
2026-W35	€15.14
2026-W36	€15.37
2026-W37	€15.26
2026-W38	€14.80
2026-W39	€14.90

Questions

How much is Dark Omastar 19/105 worth?

Dark Omastar from Neo Destiny (19/105) has a market estimate of €14.90, up 0.7% this week. Prices are estimates from TCGPlayer and Cardmarket.

Is Dark Omastar 19/105 rare?

It is a Rare from Neo Destiny, a 105-card set.

Is Dark Omastar 19/105 tournament legal?

Dark Omastar 19/105 has rotated out of the current formats.

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