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.

Union Controller · Maze of the Master 2133971/111

Union Controller (Maze of the Master 2133971/111), Collector's Rare. Market price $0.71, up 14.5% this week. Prices are estimates from TCGPlayer and Cardmarket, not guaranteed values.

1 LIGHT Machine monster + "Y-Yare Head" or "Z-Zillion Tank" Must first be Special Summoned (from your Extra Deck) by banishing the above cards you control. If this card is Special Summoned from the Extra Deck: You can add 1 Spell/Trap from your Deck to your hand that mentions "Union monster" in its text. You can only use this effect of "Union Controller" once per turn. Once per turn, during your Main Phase: You can Special Summon 1 LIGHT Machine Normal or Union monster from your hand.

Weekly price history

Week	Market price
2026-W31	$0.54
2026-W32	$0.56
2026-W33	$0.55
2026-W34	$0.64
2026-W35	$0.64
2026-W36	$0.62
2026-W37	$0.71

Questions

How much is Union Controller 2133971/111 worth?

Union Controller from Maze of the Master (2133971/111) has a market estimate of $0.71, up 14.5% this week. Prices are estimates from TCGPlayer and Cardmarket.

Is Union Controller 2133971/111 rare?

It is a Collector's Rare from Maze of the Master, a 111-card set.

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