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 · FireRed & LeafGreen 42/112

Onix (FireRed & LeafGreen 42/112), Uncommon, Basic, 80 HP. Market price €2.52, up 6.8% this week. Illustrated by Kouki Saitou. Prices are estimates from TCGPlayer and Cardmarket, not guaranteed values.

Card text

Rock Throw 10
Tunneling — Choose up to 2 of your opponent's Benched Pokémon. This attack does 10 damage to each of them. (Don't apply Weakness and Resistance for Benched Pokémon.) Onix can't attack during your next turn.

Weekly price history

Week	Market price
2026-W31	€2.24
2026-W32	€2.41
2026-W33	€2.41
2026-W34	€2.34
2026-W35	€2.34
2026-W36	€2.30
2026-W37	€2.23
2026-W38	€2.36
2026-W39	€2.52

Printings & variants

Normal — $2.72
Reverse Holo — $22.99

Questions

How much is Onix 42/112 worth?

Onix from FireRed & LeafGreen (42/112) has a market estimate of €2.52, up 6.8% this week. Prices are estimates from TCGPlayer and Cardmarket.

Is Onix 42/112 rare?

It is an Uncommon from FireRed & LeafGreen, a 112-card set.

Is Onix 42/112 tournament legal?

Onix 42/112 has rotated out of the current formats.

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