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.

Cleffa · Unseen Forces 21/115

Cleffa (Unseen Forces 21/115), Rare, Basic, 50 HP. Market price €5.85, up 1.9% this week. Illustrated by Yuka Morii. Prices are estimates from TCGPlayer and Cardmarket, not guaranteed values.

Card text

Poke-POWER: Baby Evolution — Once during your turn (before your attack), you may put Clefairy from your hand onto Cleffa (this counts as evolving Cleffa) and remove all damage counters from Cleffa.
Eeeeeeek — Shuffle your hand into your deck, then draw 6 cards.

Weekly price history

Week	Market price
2026-W31	€4.74
2026-W32	€4.35
2026-W33	€4.73
2026-W34	€4.66
2026-W35	€4.66
2026-W36	€5.38
2026-W37	€5.75
2026-W38	€5.74
2026-W39	€5.85

Printings & variants

Normal — $27.93
Reverse Holo — $78.50

Questions

How much is Cleffa 21/115 worth?

Cleffa from Unseen Forces (21/115) has a market estimate of €5.85, up 1.9% this week. Prices are estimates from TCGPlayer and Cardmarket.

Is Cleffa 21/115 rare?

It is a Rare from Unseen Forces, a 115-card set.

Is Cleffa 21/115 tournament legal?

Cleffa 21/115 has rotated out of the current formats.

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