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.

Rain Castform · Hidden Legends 23/101

Rain Castform (Hidden Legends 23/101), Rare, Basic, 60 HP. Market price €1.92, down 8.1% this week. Illustrated by Sumiyoshi Kizuki. Prices are estimates from TCGPlayer and Cardmarket, not guaranteed values.

Card text

Poke-POWER: Temperamental Weather — Once during your turn (before your attack), you may search your deck for Castform, Sunny Castform, or Snow-cloud Castform and switch it with Rain Castform. (Any cards attached to Rain Castform, damage counters, Special Conditions, and effects on it are now on the new Pokémon.) Shuffle Rain Castform back into your deck. You can't use more than 1 Temperamental Weather Poké-Power each turn.
Scattered Shower — Shuffle your hand into your deck. Draw up to 5 cards.
Rainy Day Blues 20 — If Low Pressure System is in play, the Defending Pokémon is now Confused.

Weekly price history

Week	Market price
2026-W31	€2.11
2026-W32	€2.06
2026-W33	€2.06
2026-W34	€2.10
2026-W35	€2.10
2026-W36	€2.10
2026-W37	€2.09
2026-W38	€2.09
2026-W39	€1.92

Printings & variants

Normal — $5.87
Reverse Holo — $40.23

Questions

How much is Rain Castform 23/101 worth?

Rain Castform from Hidden Legends (23/101) has a market estimate of €1.92, down 8.1% this week. Prices are estimates from TCGPlayer and Cardmarket.

Is Rain Castform 23/101 rare?

It is a Rare from Hidden Legends, a 101-card set.

Is Rain Castform 23/101 tournament legal?

Rain Castform 23/101 has rotated out of the current formats.

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