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.

Gum-Gum Giant (Manga) · Emperors in the New World OP09-078/238

Gum-Gum Giant (Manga) (Emperors in the New World OP09-078/238), R. Market price $409.60, unchanged this week. Prices are estimates from TCGPlayer and Cardmarket, not guaranteed values.

[Counter] DON!! 2, You may trash 1 card from your hand: If your Leader has the "Straw Hat Crew" type, up to 1 of your Leader or Character cards gains +4000 power during this battle. Then, draw 2 cards.

Weekly price history

Week	Market price
2026-W30	$409.60
2026-W31	$409.60
2026-W32	$409.60
2026-W33	$409.60
2026-W34	$409.60
2026-W35	$409.60
2026-W36	$409.60

Printings & variants

Gum-Gum Giant (Manga) OP09-078 — $409.60
Gum-Gum Giant OP09-078 — $2.28
Gum-Gum Giant (Reprint) OP09-078 — $0.35

Questions

How much is Gum-Gum Giant (Manga) OP09-078/238 worth?

Gum-Gum Giant (Manga) from Emperors in the New World (OP09-078/238) has a market estimate of $409.60, unchanged this week. Prices are estimates from TCGPlayer and Cardmarket.

Is Gum-Gum Giant (Manga) OP09-078/238 rare?

It is a R from Emperors in the New World, a 238-card set.

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