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.

B.E.S. Derringer Core · Burst Protocol 5121528/101

B.E.S. Derringer Core (Burst Protocol 5121528/101), Super Rare. Market price $0.19, up 5.6% this week. Prices are estimates from TCGPlayer and Cardmarket, not guaranteed values.

You can reveal 1 other "B.E.S." monster in your hand; Special Summon this card from your hand, then place 3 counters on this card. During the Main Phase (Quick Effect): You can remove 1 counter from this card and activate 1 of these effects; ● Add 1 "Boss Rush" or 1 Spell/Trap that mentions it, from your Deck to your hand. ● Special Summon 1 Level 9 or lower "B.E.S." monster from your GY. You can only use each effect of "B.E.S. Derringer Core" once per turn.

Weekly price history

Week	Market price
2026-W31	$0.15
2026-W32	$0.13
2026-W33	$0.15
2026-W34	$0.18
2026-W35	$0.18
2026-W36	$0.18
2026-W37	$0.19

Questions

How much is B.E.S. Derringer Core 5121528/101 worth?

B.E.S. Derringer Core from Burst Protocol (5121528/101) has a market estimate of $0.19, up 5.6% this week. Prices are estimates from TCGPlayer and Cardmarket.

Is B.E.S. Derringer Core 5121528/101 rare?

It is a Super Rare from Burst Protocol, a 101-card set.

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