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.

Evil HERO Dead-End Prison · Supreme Darkness 30583090/101

Evil HERO Dead-End Prison (Supreme Darkness 30583090/101), Quarter Century Secret Rare. Market price $9.75, down 1.5% this week. Prices are estimates from TCGPlayer and Cardmarket, not guaranteed values.

If you control a Fusion Monster that must be Special Summoned with "Dark Fusion", you can Special Summon this card (from your hand). You can only Special Summon "Evil HERO Dead-End Prison" once per turn this way. You can send 1 "HERO" monster from your Deck to the GY; if you Fusion Summon a "HERO" monster this turn, this face-up card can be used as a substitute for 1 material mentioned by name, but all other Fusion Materials must be correct. You can only use this effect of "Evil HERO Dead-End Prison" once per turn.

Weekly price history

Week	Market price
2026-W31	$10.29
2026-W32	$10.13
2026-W33	$10.16
2026-W34	$9.94
2026-W35	$9.94
2026-W36	$9.90
2026-W37	$9.75

Questions

How much is Evil HERO Dead-End Prison 30583090/101 worth?

Evil HERO Dead-End Prison from Supreme Darkness (30583090/101) has a market estimate of $9.75, down 1.5% this week. Prices are estimates from TCGPlayer and Cardmarket.

Is Evil HERO Dead-End Prison 30583090/101 rare?

It is a Quarter Century Secret Rare from Supreme Darkness, a 101-card set.

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