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.

Dark Spirit's Mastery · Legendary Duelists: Immortal Destiny 14386013/58

Dark Spirit's Mastery (Legendary Duelists: Immortal Destiny 14386013/58), Ultra Rare. Market price $0.52, down 8.8% this week. Prices are estimates from TCGPlayer and Cardmarket, not guaranteed values.

Discard 1 card; add 1 "Destiny Board" or 1 Level 8 Fiend monster from your Deck or GY to your hand. You can banish this card from your GY, except the turn this card was sent to the GY; place any number of "Destiny Board" and/or "Spirit Message" cards with different names from your hand or GY on the bottom of the Deck in any order, then draw the same number of cards. You can only use each effect of "Dark Spirit's Mastery" once per turn.

Weekly price history

Week	Market price
2026-W31	$0.61
2026-W32	$0.62
2026-W33	$0.62
2026-W34	$0.61
2026-W35	$0.61
2026-W36	$0.58
2026-W37	$0.58
2026-W38	$0.57
2026-W39	$0.52

Questions

How much is Dark Spirit's Mastery 14386013/58 worth?

Dark Spirit's Mastery from Legendary Duelists: Immortal Destiny (14386013/58) has a market estimate of $0.52, down 8.8% this week. Prices are estimates from TCGPlayer and Cardmarket.

Is Dark Spirit's Mastery 14386013/58 rare?

It is an Ultra Rare from Legendary Duelists: Immortal Destiny, a 58-card set.

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