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.

Eternal Sunshine · Alliance Insight 28903523/100

Eternal Sunshine (Alliance Insight 28903523/100), Common. Market price $0.15, down 6.3% this week. Prices are estimates from TCGPlayer and Cardmarket, not guaranteed values.

Monsters you control gain 500 DEF for each "Ancient Fairy Dragon", and monsters that mention it, that you control. Once per Chain: You can target 1 face-up monster your opponent controls; until the end of this turn, its ATK/DEF become halved, also its effects are negated. You can use this effect of "Eternal Sunshine" a number of times per turn, up to the number of "Ancient Fairy Dragon", and monsters that mention it, that you control.

Weekly price history

Week	Market price
2026-W31	$0.14
2026-W32	$0.14
2026-W33	$0.15
2026-W34	$0.16
2026-W35	$0.16
2026-W36	$0.16
2026-W37	$0.15

Questions

How much is Eternal Sunshine 28903523/100 worth?

Eternal Sunshine from Alliance Insight (28903523/100) has a market estimate of $0.15, down 6.3% this week. Prices are estimates from TCGPlayer and Cardmarket.

Is Eternal Sunshine 28903523/100 rare?

It is a Common from Alliance Insight, a 100-card set.

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