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 · Delta Species 12/113

Mewtwo δ (Delta Species 12/113), Rare, Basic, 70 HP. Market price €113.77, up 4.0% this week. Illustrated by Ryo Ueda. Prices are estimates from TCGPlayer and Cardmarket, not guaranteed values.

Card text

Poke-POWER: Delta Switch — Once during your turn, when you put Mewtwo from your hand onto your Bench, you may move any number of basic Energy cards attached to your Pokémon to your other Pokémon (excluding Mewtwo) in any way you like.
Energy Burst 10x — Does 10 damage times the total amount of Energy attached to Mewtwo and the Defending Pokémon.

Weekly price history

Week	Market price
2026-W31	€105.83
2026-W32	€105.83
2026-W33	€105.83
2026-W34	€108.92
2026-W35	€108.92
2026-W36	€108.92
2026-W37	€111.10
2026-W38	€109.38
2026-W39	€113.77

Questions

How much is Mewtwo δ 12/113 worth?

Mewtwo δ from Delta Species (12/113) has a market estimate of €113.77, up 4.0% this week. Prices are estimates from TCGPlayer and Cardmarket.

Is Mewtwo δ 12/113 rare?

It is a Rare from Delta Species, a 113-card set.

Is Mewtwo δ 12/113 tournament legal?

Mewtwo δ 12/113 has rotated out of the current formats.

Browse more Pokémon cards · All Delta Species cards · Build a deck · Track your collection