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.

Blacephalon · Cosmic Eclipse 104/236

Blacephalon (Cosmic Eclipse 104/236), Rare, Basic, 110 HP. Market price €8.85, up 2.8% this week. Illustrated by Hasuno. Prices are estimates from TCGPlayer and Cardmarket, not guaranteed values.

It slithers toward people. Then, without warning, it triggers the explosion of its own head. It's apparently one kind of Ultra Beast.

Card text

Fireworks Bomb — Put 4 damage counters on your opponent’s Pokémon in any way you like. If your opponent has exactly 3 Prize cards remaining, put 12 damage counters on them instead.

Weekly price history

Week	Market price
2026-W31	€7.58
2026-W32	€8.12
2026-W33	€8.12
2026-W34	€8.18
2026-W35	€8.18
2026-W36	€8.56
2026-W37	€8.61
2026-W38	€8.61
2026-W39	€8.85

Questions

How much is Blacephalon 104/236 worth?

Blacephalon from Cosmic Eclipse (104/236) has a market estimate of €8.85, up 2.8% this week. Prices are estimates from TCGPlayer and Cardmarket.

Is Blacephalon 104/236 rare?

It is a Rare from Cosmic Eclipse, a 236-card set.

Is Blacephalon 104/236 tournament legal?

Blacephalon 104/236 is legal in Expanded.

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