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.

Gyarados δ · Holon Phantoms 8/110

Gyarados δ (Holon Phantoms 8/110), Rare, Stage1, 90 HP. Market price €98.30, up 6.1% this week. Illustrated by Hajime Kusajima. Prices are estimates from TCGPlayer and Cardmarket, not guaranteed values.

Card text

Poke-BODY: Delta Reactor — As long as any Stadium card with Holon in its name is in play, each of your Pokémon that has δ on its card does 10 more damage to the Defending Pokémon (before applying Weakness and Resistance).
Hyper Beam 20 — Flip a coin. If heads, discard an Energy card attached to the Defending Pokémon.
Heavy Impact 80

Weekly price history

Week	Market price
2026-W31	€79.21
2026-W32	€77.26
2026-W33	€77.26
2026-W34	€74.07
2026-W35	€74.07
2026-W36	€84.06
2026-W37	€89.03
2026-W38	€92.69
2026-W39	€98.30

Questions

How much is Gyarados δ 8/110 worth?

Gyarados δ from Holon Phantoms (8/110) has a market estimate of €98.30, up 6.1% this week. Prices are estimates from TCGPlayer and Cardmarket.

Is Gyarados δ 8/110 rare?

It is a Rare from Holon Phantoms, a 110-card set.

Is Gyarados δ 8/110 tournament legal?

Gyarados δ 8/110 has rotated out of the current formats.

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