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.

Mewtwo δ · Holon Phantoms 24/110

Mewtwo δ (Holon Phantoms 24/110), Rare, Basic, 70 HP. Market price €19.91, up 2.0% this week. Illustrated by Ryo Ueda. Prices are estimates from TCGPlayer and Cardmarket, not guaranteed values.

Card text

Psychic Erase — Choose 1 of the Defending Pokémon's attacks. That Pokémon can't use that attack during your opponent's next turn.
Swift 40 — This attack's damage isn't affected by Weakness, Resistance, Poké-Powers, Poké-Bodies, or any other effects on that Pokémon.

Weekly price history

Week	Market price
2026-W31	€13.50
2026-W32	€14.36
2026-W33	€14.36
2026-W34	€13.56
2026-W35	€13.56
2026-W36	€13.08
2026-W37	€14.52
2026-W38	€19.52
2026-W39	€19.91

Questions

How much is Mewtwo δ 24/110 worth?

Mewtwo δ from Holon Phantoms (24/110) has a market estimate of €19.91, up 2.0% this week. Prices are estimates from TCGPlayer and Cardmarket.

Is Mewtwo δ 24/110 rare?

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

Is Mewtwo δ 24/110 tournament legal?

Mewtwo δ 24/110 has rotated out of the current formats.

Browse more Pokémon cards · All Holon Phantoms cards · Build a deck · Track your collection