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.

Slifer the Sky Dragon · Battle Pack 2: War of the Giants 10000020/215

Slifer the Sky Dragon (Battle Pack 2: War of the Giants 10000020/215), Mosaic Rare. Market price $0.53, unchanged this week. Prices are estimates from TCGPlayer and Cardmarket, not guaranteed values.

Requires 3 Tributes to Normal Summon (cannot be Normal Set). This card's Normal Summon cannot be negated. When Normal Summoned, cards and effects cannot be activated. Once per turn, during the End Phase, if this card was Special Summoned: Send it to the GY. Gains 1000 ATK/DEF for each card in your hand. If a monster(s) is Normal or Special Summoned to your opponent's field in Attack Position: That monster(s) loses 2000 ATK, then if its ATK has been reduced to 0 as a result, destroy it.

Weekly price history

Week	Market price
2026-W31	$0.53
2026-W32	$0.54
2026-W33	$0.55
2026-W34	$0.56
2026-W35	$0.56
2026-W36	$0.55
2026-W37	$0.53
2026-W38	$0.53
2026-W39	$0.53

Questions

How much is Slifer the Sky Dragon 10000020/215 worth?

Slifer the Sky Dragon from Battle Pack 2: War of the Giants (10000020/215) has a market estimate of $0.53, unchanged this week. Prices are estimates from TCGPlayer and Cardmarket.

Is Slifer the Sky Dragon 10000020/215 rare?

It is a Mosaic Rare from Battle Pack 2: War of the Giants, a 215-card set.

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