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.

R.B. VALCan Booster · Yu-Gi-Oh (No Set) 6821579

R.B. VALCan Booster (Yu-Gi-Oh (No Set) 6821579). Market price $0.83, up 1.2% this week. Prices are estimates from TCGPlayer and Cardmarket, not guaranteed values.

2 Machine monsters If this card is Link Summoned: You can add 1 "R.B." Spell from your Deck to your hand. If this card is in the Extra Monster Zone: You can Special Summon 1 "R.B." monster from your hand or GY in Defense Position, then you can move this card you control to another of your Main Monster Zones, also you cannot Special Summon from the Extra Deck for the rest of this turn, except Machine monsters with 1500 or less ATK. You can only use each effect of "R.B. VALCan Booster" once per turn.

Weekly price history

Week	Market price
2026-W31	$0.80
2026-W32	$0.82
2026-W33	$0.96
2026-W34	$1.03
2026-W35	$1.03
2026-W36	$1.07
2026-W37	$1.05
2026-W38	$0.82
2026-W39	$0.83

Questions

How much is R.B. VALCan Booster 6821579 worth?

R.B. VALCan Booster from Yu-Gi-Oh (No Set) (6821579) has a market estimate of $0.83, up 1.2% this week. Prices are estimates from TCGPlayer and Cardmarket.

Browse more Yu-Gi-Oh cards · All Yu-Gi-Oh (No Set) cards · Build a deck · Track your collection