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.

Deoxys δ · Holon Phantoms 4/110

Deoxys δ (Holon Phantoms 4/110), Rare, Basic, 80 HP. Market price €22.74, up 8.7% this week. Illustrated by Kagemaru Himeno. Prices are estimates from TCGPlayer and Cardmarket, not guaranteed values.

Card text

Poke-POWER: Form Change — Once during your turn (before your attack), you may search your deck for another Deoxys and switch it with Deoxys. (Any cards attached to Deoxys, damage counters, Special Conditions, and effects on it are now on the new Pokémon.) If you do, put Deoxys on top of your deck. Shuffle your deck afterward. You can't use more than 1 Form Change Poké-Power each turn.
Delta Reduction 30 — During your opponent's next turn, any damage done to Deoxys by attacks is reduced by 30 (before applying Weakness and Resistance).

Weekly price history

Week	Market price
2026-W31	€22.06
2026-W32	€22.52
2026-W33	€21.31
2026-W34	€20.53
2026-W35	€20.53
2026-W36	€20.53
2026-W37	€20.92
2026-W38	€20.92
2026-W39	€22.74

Questions

How much is Deoxys δ 4/110 worth?

Deoxys δ from Holon Phantoms (4/110) has a market estimate of €22.74, up 8.7% this week. Prices are estimates from TCGPlayer and Cardmarket.

Is Deoxys δ 4/110 rare?

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

Is Deoxys δ 4/110 tournament legal?

Deoxys δ 4/110 has rotated out of the current formats.

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