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.

Castform · Delta Species 34/113

Castform (Delta Species 34/113), Uncommon, Basic, 60 HP. Market price €1.42, down 9.6% this week. Illustrated by Miki Tanaka. 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 Sunny Castform, Rain Castform, or Snow-cloud Castform and switch it with Castform. (Any cards attached to Castform, damage counters, Special Conditions, and effects on it are now on the new Pokémon.) Shuffle Castform back into your deck. You can't use more than 1 Temperamental Weather Poké-Power each turn.
Holon Draw — Draw a card. If Castform has any Holon Energy cards attached to it, draw 2 more cards.

Weekly price history

Week	Market price
2026-W31	€1.53
2026-W32	€1.65
2026-W33	€1.73
2026-W34	€1.66
2026-W35	€1.71
2026-W36	€1.71
2026-W37	€1.57
2026-W38	€1.57
2026-W39	€1.42

Printings & variants

Normal — $2.89

Questions

How much is Castform 34/113 worth?

Castform from Delta Species (34/113) has a market estimate of €1.42, down 9.6% this week. Prices are estimates from TCGPlayer and Cardmarket.

Is Castform 34/113 rare?

It is an Uncommon from Delta Species, a 113-card set.

Is Castform 34/113 tournament legal?

Castform 34/113 has rotated out of the current formats.

Browse more Pokémon cards · All Delta Species cards · Build a deck · Track your collection