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.

Onix · Base Set 2 84/130

Onix (Base Set 2 84/130), Common, Basic, 90 HP. Market price €5.67, down 0.7% this week. Illustrated by Ken Sugimori. Prices are estimates from TCGPlayer and Cardmarket, not guaranteed values.

As it grows, the stone portions of its body harden to become similar to a diamond, though colored black.

Card text

Rock Throw 10
Harden — During opponent's next turn, whenever 30 or less damage is done to Onix (after applying Weakness and Resistance), prevent that damage. (Any other effects of attacks still happen.)

Weekly price history

Week	Market price
2026-W31	€1.37
2026-W32	€1.39
2026-W33	€1.39
2026-W34	€1.37
2026-W35	€1.37
2026-W36	€1.34
2026-W37	€5.53
2026-W38	€5.71
2026-W39	€5.67

Printings & variants

Normal — $1.07

Questions

How much is Onix 84/130 worth?

Onix from Base Set 2 (84/130) has a market estimate of €5.67, down 0.7% this week. Prices are estimates from TCGPlayer and Cardmarket.

Is Onix 84/130 rare?

It is a Common from Base Set 2, a 130-card set.

Is Onix 84/130 tournament legal?

Onix 84/130 has rotated out of the current formats.

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