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.

Double Rainbow Energy · Crystal Guardians 88/100

Double Rainbow Energy (Crystal Guardians 88/100), Rare. Market price €2.75, up 2.2% this week. Illustrated by Takumi Akabane. Prices are estimates from TCGPlayer and Cardmarket, not guaranteed values.

Card text

Double Rainbow Energy can be attached only to an Evolved Pokémon (excluding Pokémon-ex). While in play, Double Rainbow Energy provides every type of Energy but provides 2 Energy at a time. (Has no effect other than providing Energy.) Damage done to your opponent's Pokémon by the Pokémon Double Rainbow Energy is attached to is reduced by 10 (before applying Weakness and Resistance). When the Pokémon Double Rainbow Energy is attached to is no longer an Evolved Pokémon, discard Double Rainbow Energy.

Weekly price history

Week	Market price
2026-W31	€2.17
2026-W32	€2.39
2026-W33	€2.39
2026-W34	€2.52
2026-W35	€2.59
2026-W36	€2.69
2026-W37	€2.69
2026-W38	€2.69
2026-W39	€2.75

Printings & variants

Normal — $5.43

Questions

How much is Double Rainbow Energy 88/100 worth?

Double Rainbow Energy from Crystal Guardians (88/100) has a market estimate of €2.75, up 2.2% this week. Prices are estimates from TCGPlayer and Cardmarket.

Is Double Rainbow Energy 88/100 rare?

It is a Rare from Crystal Guardians, a 100-card set.

Is Double Rainbow Energy 88/100 tournament legal?

Double Rainbow Energy 88/100 has rotated out of the current formats.

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