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.

Omastar · 151 139/165

Omastar (151 139/165), Rare, Stage2, 150 HP. Market price €0.24, up 4.3% this week. Illustrated by Akira Komayama. Prices are estimates from TCGPlayer and Cardmarket, not guaranteed values.

Omastar's sharp fangs could crush rock, but the Pokémon can attack only the prey that come within reach of its tentacles.

Card text

Ability: Primordial Tentacles — As long as this Pokémon is in the Active Spot, your opponent's Active Pokémon can't retreat.
Aqua Split 90 — This attack also does 30 damage to 2 of your opponent's Benched Pokémon. (Don't apply Weakness and Resistance for Benched Pokémon.)

Weekly price history

Week	Market price
2026-W31	€0.21
2026-W32	€0.21
2026-W33	€0.21
2026-W34	€0.22
2026-W35	€0.23
2026-W36	€0.23
2026-W37	€0.23
2026-W38	€0.23
2026-W39	€0.24

Printings & variants

Holo — $0.26
Reverse Holo — $1.26

Questions

How much is Omastar 139/165 worth?

Omastar from 151 (139/165) has a market estimate of €0.24, up 4.3% this week. Prices are estimates from TCGPlayer and Cardmarket.

Is Omastar 139/165 rare?

It is a Rare from 151, a 165-card set.

Is Omastar 139/165 tournament legal?

Omastar 139/165 is legal in Expanded.

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