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.

Duke Shade, the Sinister Shadow Lord · Structure Deck: Lair of Darkness 12766474/42

Duke Shade, the Sinister Shadow Lord (Structure Deck: Lair of Darkness 12766474/42), Common. Market price $0.06, unchanged this week. Prices are estimates from TCGPlayer and Cardmarket, not guaranteed values.

You can Tribute any number of DARK monsters; Special Summon this card from your hand, and if you do, it gains 500 ATK for each monster you Tributed. If this card is Normal or Special Summoned: You can target 1 Level 5 or higher DARK monster in your GY; add it to your hand. You can only use each effect of "Duke Shade, the Sinister Shadow Lord" once per turn. You cannot Special Summon monsters the turn you activate either of this card's effects, except DARK monsters.

Weekly price history

Week	Market price
2026-W31	$0.11
2026-W32	$0.11
2026-W33	$0.11
2026-W34	$0.06
2026-W35	$0.06
2026-W36	$0.06
2026-W37	$0.06

Questions

How much is Duke Shade, the Sinister Shadow Lord 12766474/42 worth?

Duke Shade, the Sinister Shadow Lord from Structure Deck: Lair of Darkness (12766474/42) has a market estimate of $0.06, unchanged this week. Prices are estimates from TCGPlayer and Cardmarket.

Is Duke Shade, the Sinister Shadow Lord 12766474/42 rare?

It is a Common from Structure Deck: Lair of Darkness, a 42-card set.

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