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.

Earthbound Prison · Maze of Millennia 71089030/85

Earthbound Prison (Maze of Millennia 71089030/85), Super Rare. Market price $0.35, down 7.9% this week. Prices are estimates from TCGPlayer and Cardmarket, not guaranteed values.

When this card is activated: You can target 1 Effect Monster your opponent controls; this card gains this effect. ● While this card is in the Field Zone, negate the effects of that face-up Effect Monster while it is on the field. During your Main Phase, you can Normal Summon 1 "Earthbound" monster in addition to your Normal Summon/Set. (You can only gain this effect once per turn.) If this card in your possession is destroyed by an opponent's card effect, and you have an "Earthbound" monster in your field or GY: Halve your opponent's LP, and if you do, negate the effects of all face-up cards your opponent currently controls, until the end of this turn.

Weekly price history

Week	Market price
2026-W31	$0.33
2026-W32	$0.34
2026-W33	$0.35
2026-W34	$0.35
2026-W35	$0.35
2026-W36	$0.38
2026-W37	$0.35

Questions

How much is Earthbound Prison 71089030/85 worth?

Earthbound Prison from Maze of Millennia (71089030/85) has a market estimate of $0.35, down 7.9% this week. Prices are estimates from TCGPlayer and Cardmarket.

Is Earthbound Prison 71089030/85 rare?

It is a Super Rare from Maze of Millennia, a 85-card set.

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