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 Blue Sky · Extreme Force Special Edition 20537097/4

Mekk-Knight Blue Sky (Extreme Force Special Edition 20537097/4), Secret Rare. Market price $0.13, unchanged this week. Prices are estimates from TCGPlayer and Cardmarket, not guaranteed values.

If 2 or more cards are in the same column, you can Special Summon this card (from your hand) in that column. You can only Special Summon "Mekk-Knight Blue Sky" once per turn this way. If this card is Normal or Special Summoned from the hand: You can add "Mekk-Knight" monsters with different names, except "Mekk-Knight Blue Sky", from your Deck to your hand, equal to the number of your opponent's cards in this card's column. You can only use this effect of "Mekk-Knight Blue Sky" once per turn.

Weekly price history

Week	Market price
2026-W31	$0.10
2026-W32	$0.10
2026-W33	$0.12
2026-W34	$0.12
2026-W35	$0.12
2026-W36	$0.12
2026-W37	$0.12
2026-W38	$0.13
2026-W39	$0.13

Questions

How much is Mekk-Knight Blue Sky 20537097/4 worth?

Mekk-Knight Blue Sky from Extreme Force Special Edition (20537097/4) has a market estimate of $0.13, unchanged this week. Prices are estimates from TCGPlayer and Cardmarket.

Is Mekk-Knight Blue Sky 20537097/4 rare?

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

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