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.

Demona - Betrayer of the Clan · Whispers in the Well 40/224

Demona - Betrayer of the Clan (Whispers in the Well 40/224), Common. Market price $0.06. Illustrated by Alice Pisoni. Prices are estimates from TCGPlayer and Cardmarket, not guaranteed values.

Challenger +2 (While challenging, this character gets +2 {S}.) STONE BY DAY If you have 3 or more cards in your hand, this character can't ready.

Weekly price history

Week	Market price
2026-W39	$0.05

Questions

How much is Demona - Betrayer of the Clan 40/224 worth?

Demona - Betrayer of the Clan from Whispers in the Well (40/224) has a market estimate of $0.06. Prices are estimates from TCGPlayer and Cardmarket.

Is Demona - Betrayer of the Clan 40/224 rare?

It is a Common from Whispers in the Well, a 224-card set.

Browse more Disney Lorcana cards · All Whispers in the Well cards · Build a deck · Track your collection