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.

Sandwich Day · Maze of Muertos 83838727/127

Sandwich Day (Maze of Muertos 83838727/127), Super Rare. Market price $0.42, down 12.5% this week. Prices are estimates from TCGPlayer and Cardmarket, not guaranteed values.

If you have a monster in your GY: Pay 200 LP; draw 1 card and reveal it, then, if it is a monster, apply this effect based on its Attribute. ● An Attribute not in your GY: Draw 1 card. ● An Attribute in your GY: Discard 1 card. You can only activate 1 "Sandwich Day" per turn.

Weekly price history

Week	Market price
2026-W31	$0.38
2026-W32	$0.43
2026-W33	$0.40
2026-W34	$0.41
2026-W35	$0.41
2026-W36	$0.48
2026-W37	$0.42

Questions

How much is Sandwich Day 83838727/127 worth?

Sandwich Day from Maze of Muertos (83838727/127) has a market estimate of $0.42, down 12.5% this week. Prices are estimates from TCGPlayer and Cardmarket.

Is Sandwich Day 83838727/127 rare?

It is a Super Rare from Maze of Muertos, a 127-card set.

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