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.

The Duke of Demise · Maze of the Master 45445571/111

The Duke of Demise (Maze of the Master 45445571/111), Ultra Rare. Market price $5.50, up 0.5% this week. Prices are estimates from TCGPlayer and Cardmarket, not guaranteed values.

2 Fiend and/or Zombie monsters Once per turn, during your Standby Phase, pay 500 LP or destroy this card. Cannot be destroyed by battle. You can only use each of the following effects of "The Duke of Demise" once per turn. During your Main Phase, you can: Immediately after this effect resolves, Normal Summon 1 monster. You can banish this card from your GY, then target 1 Level 4 or higher Fiend or Zombie monster in your GY; add it to your hand.

Weekly price history

Week	Market price
2026-W31	$5.91
2026-W32	$5.15
2026-W33	$5.34
2026-W34	$5.21
2026-W35	$5.21
2026-W36	$5.47
2026-W37	$5.50

Questions

How much is The Duke of Demise 45445571/111 worth?

The Duke of Demise from Maze of the Master (45445571/111) has a market estimate of $5.50, up 0.5% this week. Prices are estimates from TCGPlayer and Cardmarket.

Is The Duke of Demise 45445571/111 rare?

It is a Ultra Rare from Maze of the Master, a 111-card set.

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