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.

Darkest Diabolos, Lord of the Lair · Structure Deck: Lair of Darkness 50383626/42

Darkest Diabolos, Lord of the Lair (Structure Deck: Lair of Darkness 50383626/42), Ultra Rare. Market price $1.82, unchanged this week. Prices are estimates from TCGPlayer and Cardmarket, not guaranteed values.

Your opponent cannot Tribute this face-up card on the field, and cannot target it with card effects. You can only use each of these effects of "Darkest Diabolos, Lord of the Lair" once per turn. ● If a DARK monster you control is Tributed (except during the Damage Step): You can Special Summon this card from your GY (if it was there when you Tributed) or hand (even if not). ● You can Tribute 1 DARK monster; your opponent places 1 card from their hand on either the top or bottom of the Deck.

Weekly price history

Week	Market price
2026-W31	$1.56
2026-W32	$1.58
2026-W33	$1.57
2026-W34	$1.56
2026-W35	$1.56
2026-W36	$1.59
2026-W37	$1.65
2026-W38	$1.82
2026-W39	$1.82

Questions

How much is Darkest Diabolos, Lord of the Lair 50383626/42 worth?

Darkest Diabolos, Lord of the Lair from Structure Deck: Lair of Darkness (50383626/42) has a market estimate of $1.82, unchanged this week. Prices are estimates from TCGPlayer and Cardmarket.

Is Darkest Diabolos, Lord of the Lair 50383626/42 rare?

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

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