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.

Frightfur Cruel Whale · Rise of the Duelist Premiere! promotional card 78778375/1

Frightfur Cruel Whale (Rise of the Duelist Premiere! promotional card 78778375/1), Common. Market price $0.40, unchanged this week. Prices are estimates from TCGPlayer and Cardmarket, not guaranteed values.

1 "Edge Imp" monster + 1 "Fluffal" monster If this card is Fusion Summoned: You can destroy 1 card on both players' fields. Once per turn (Quick Effect): You can target 1 Fusion Monster you control; send 1 "Frightfur" card from your Deck or Extra Deck to the GY, except "Frightfur Cruel Whale", and if you do, the targeted monster gains ATK equal to half of its original ATK until the end of this turn.

Weekly price history

Week	Market price
2026-W31	$0.30
2026-W32	$0.28
2026-W33	$0.33
2026-W34	$0.37
2026-W35	$0.37
2026-W36	$0.39
2026-W37	$0.40
2026-W38	$0.40
2026-W39	$0.40

Questions

How much is Frightfur Cruel Whale 78778375/1 worth?

Frightfur Cruel Whale from Rise of the Duelist Premiere! promotional card (78778375/1) has a market estimate of $0.40, unchanged this week. Prices are estimates from TCGPlayer and Cardmarket.

Is Frightfur Cruel Whale 78778375/1 rare?

It is a Common from Rise of the Duelist Premiere! promotional card, a 1-card set.

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