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.

Mekk-Knight Spectrum Supreme · Extreme Force Special Edition 38502358/4

Mekk-Knight Spectrum Supreme (Extreme Force Special Edition 38502358/4), Ultra Rare. Market price $0.25, unchanged this week. Prices are estimates from TCGPlayer and Cardmarket, not guaranteed values.

2+ "Mekk-Knight" monsters This card can attack directly if it is the only card in its column. If this card in the Extra Monster Zone points to no monsters, it cannot be destroyed by card effects, also your opponent cannot target it with card effects. You can send 1 other card you control in this card's column to the GY: Special Summon 1 "Mekk-Knight" monster from your Deck in Defense Position. You can only use this effect of "Mekk-Knight Spectrum Supreme" once per turn.

Weekly price history

Week	Market price
2026-W31	$0.25
2026-W32	$0.25
2026-W33	$0.25
2026-W34	$0.25
2026-W35	$0.25
2026-W36	$0.25
2026-W37	$0.25
2026-W38	$0.25
2026-W39	$0.25

Questions

How much is Mekk-Knight Spectrum Supreme 38502358/4 worth?

Mekk-Knight Spectrum Supreme from Extreme Force Special Edition (38502358/4) has a market estimate of $0.25, unchanged this week. Prices are estimates from TCGPlayer and Cardmarket.

Is Mekk-Knight Spectrum Supreme 38502358/4 rare?

It is an Ultra Rare from Extreme Force Special Edition, a 4-card set.

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