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.

Ancient Gear Hydra · Machine Reactor Structure Deck 81269231/40

Ancient Gear Hydra (Machine Reactor Structure Deck 81269231/40), Super Rare. Market price $0.20, unchanged this week. Prices are estimates from TCGPlayer and Cardmarket, not guaranteed values.

At the end of the Damage Step, when this card that was Tribute Summoned by Tributing an "Ancient Gear" monster battles an opponent's monster, but the opponent's monster was not destroyed by the battle: You can banish that opponent's monster. If this card was Tribute Summoned by Tributing a "Gadget" monster, it can attack all monsters your opponent controls, once each. If an "Ancient Gear" monster you control attacks, your opponent's Spell/Trap Cards and monster effects cannot be activated until the end of the Damage Step.

Weekly price history

Week	Market price
2026-W31	$0.29
2026-W32	$0.29
2026-W33	$0.30
2026-W34	$0.30
2026-W35	$0.30
2026-W36	$0.27
2026-W37	$0.23
2026-W38	$0.20
2026-W39	$0.20

Questions

How much is Ancient Gear Hydra 81269231/40 worth?

Ancient Gear Hydra from Machine Reactor Structure Deck (81269231/40) has a market estimate of $0.20, unchanged this week. Prices are estimates from TCGPlayer and Cardmarket.

Is Ancient Gear Hydra 81269231/40 rare?

It is a Super Rare from Machine Reactor Structure Deck, a 40-card set.

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