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.

Card Blocker · Ancient Prophecy: Special Edition 42256406/2

Card Blocker (Ancient Prophecy: Special Edition 42256406/2), Secret Rare. Market price $0.13, unchanged this week. Prices are estimates from TCGPlayer and Cardmarket, not guaranteed values.

When this card is Summoned: Change it to Defense Position. When a face-up monster you control is targeted for an attack: You can change the target to this card. When this card is targeted for an attack: You can choose a number from 1 to 3, then send that many cards from the top of your Deck to the Graveyard; this card gains 500 DEF for each card sent, until the End Phase.

Weekly price history

Week	Market price
2026-W31	$0.14
2026-W32	$0.14
2026-W33	$0.13
2026-W34	$0.13
2026-W35	$0.13
2026-W36	$0.13
2026-W37	$0.13
2026-W38	$0.13
2026-W39	$0.13

Questions

How much is Card Blocker 42256406/2 worth?

Card Blocker from Ancient Prophecy: Special Edition (42256406/2) has a market estimate of $0.13, unchanged this week. Prices are estimates from TCGPlayer and Cardmarket.

Is Card Blocker 42256406/2 rare?

It is a Secret Rare from Ancient Prophecy: Special Edition, a 2-card set.

Browse more Yu-Gi-Oh cards · All Ancient Prophecy: Special Edition cards · Build a deck · Track your collection