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?

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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.

Voltorb · Roaring Skies 21/108

Voltorb (Roaring Skies 21/108), Common, Basic, 60 HP. Market price €0.10, up 11.1% this week. Illustrated by Suwama Chiaki. Prices are estimates from TCGPlayer and Cardmarket, not guaranteed values.

Usually found in power plants. Easily mistaken for a Poké Ball, it has zapped many people.

Card text

Thunder Wave — Flip a coin. If heads, your opponent's Active Pokémon is now Paralyzed.
Big Explosion 60 — This Pokémon does 60 damage to itself.

Weekly price history

Week	Market price
2026-W31	€0.13
2026-W32	€0.13
2026-W33	€0.13
2026-W34	€0.12
2026-W35	€0.12
2026-W36	€0.11
2026-W37	€0.09
2026-W38	€0.09
2026-W39	€0.10

Printings & variants

Normal — $0.16

Questions

How much is Voltorb 21/108 worth?

Voltorb from Roaring Skies (21/108) has a market estimate of €0.10, up 11.1% this week. Prices are estimates from TCGPlayer and Cardmarket.

Is Voltorb 21/108 rare?

It is a Common from Roaring Skies, a 108-card set.

Is Voltorb 21/108 tournament legal?

Voltorb 21/108 is legal in Expanded.

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