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.

Mythical Beast Master Cerberus · Extreme Force Special Edition 53842431/4

Mythical Beast Master Cerberus (Extreme Force Special Edition 53842431/4), Secret Rare. Market price $1.17, unchanged this week. Prices are estimates from TCGPlayer and Cardmarket, not guaranteed values.

[ Pendulum Effect ] If you have no card in your other Pendulum Zone: You can destroy this card, and if you do, add 1 Level 7 or lower "Mythical Beast" Effect Monster from your Deck to your hand. You can only use this effect of "Mythical Beast Master Cerberus" once per turn. [ Monster Effect ] Each time a Spell Card is activated, place 2 Spell Counters on this card when that Spell resolves. Cannot be destroyed by card effects while 4 or more Spell Counters are on your field. Once per turn: You can remove 4 Spell Counters from your field, then target 1 monster your opponent controls; banish it face-up, and if you do, this card gains ATK equal to the banished monster's original ATK until the end of the opponent's turn.

Weekly price history

Week	Market price
2026-W31	$1.19
2026-W32	$1.17
2026-W33	$1.18
2026-W34	$1.18
2026-W35	$1.18
2026-W36	$1.18
2026-W37	$1.18
2026-W38	$1.17
2026-W39	$1.17

Questions

How much is Mythical Beast Master Cerberus 53842431/4 worth?

Mythical Beast Master Cerberus from Extreme Force Special Edition (53842431/4) has a market estimate of $1.17, unchanged this week. Prices are estimates from TCGPlayer and Cardmarket.

Is Mythical Beast Master Cerberus 53842431/4 rare?

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

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