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.

Steelix · Cosmic Eclipse 139/236

Steelix (Cosmic Eclipse 139/236), Rare, Stage1, 170 HP. Market price €17.17, up 3.0% this week. Illustrated by KEIICHIRO ITO. Prices are estimates from TCGPlayer and Cardmarket, not guaranteed values.

Tempered underground under high pressure and heat, its body is harder than any metal.

Card text

Thumping Fall 50× — Discard any number of Pokémon with a Retreat Cost of exactly 4 from your hand. This attack does 50 damage for each card you discarded in this way.
Iron Tail 100× — Flip a coin until you get tails. This attack does 100 damage for each heads.

Weekly price history

Week	Market price
2026-W31	€15.19
2026-W32	€16.23
2026-W33	€16.68
2026-W34	€17.06
2026-W35	€17.06
2026-W36	€17.41
2026-W37	€16.61
2026-W38	€16.67
2026-W39	€17.17

Questions

How much is Steelix 139/236 worth?

Steelix from Cosmic Eclipse (139/236) has a market estimate of €17.17, up 3.0% this week. Prices are estimates from TCGPlayer and Cardmarket.

Is Steelix 139/236 rare?

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

Is Steelix 139/236 tournament legal?

Steelix 139/236 is legal in Expanded.

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