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.

Erika's Gloom · Gym Heroes 46/132

Erika's Gloom (Gym Heroes 46/132), Uncommon, Stage1, 70 HP. Market price €36.40, unchanged this week, relatively stable over the last 10 weeks. Illustrated by Ken Sugimori. Prices are estimates from TCGPlayer and Cardmarket, not guaranteed values.

Gloom (National Pokédex #44) first appeared in Pokémon Red and Green (1996). Its earliest English cards in our catalogue are from 1999: Jungle.

More Erika's Gloom printings

Erika's Gloom · Ascended Heroes — €0.03
Erika's Gloom · Gym Heroes — €2.02

Card text

Dream Dance 10 — Both the Defending Pokémon and Erika's Gloom are now Asleep (after doing damage).
Vile Smell 30 — Both the Defending Pokémon and Erika's Gloom are now Confused (after doing damage).

Weekly price history

Week	Market price
2026-W31	€37.65
2026-W32	€36.74
2026-W33	€36.74
2026-W34	€36.40
2026-W35	€36.40
2026-W36	€36.40
2026-W37	€36.40
2026-W38	€36.40
2026-W39	€36.40
2026-W40	€36.40

Price in context

Erika's Gloom ranks #23 of the 132 priced cards in Gym Heroes. The median Uncommon in the set is €2.71. The 132 priced cards in Gym Heroes are worth €2373.58 together; this card is 1.53% of that. The set’s value is unchanged this week. Over the last 10 weeks the set’s value went from €2413.72 to €2373.58 (-1.7%).

Top chases in Gym Heroes

Sabrina's Gengar 14 — €343.18
Blaine's Moltres 1 — €99.72
Erika's Dragonair 4 — €93.59
Rocket's Moltres 12 — €80.86
Misty 102 — €57.27

Set value over 10 weeks · same 132 cards each week
Week	Set value
2026-W31	€2413.72
2026-W32	€2370.37
2026-W33	€2370.48
2026-W34	€2368.07
2026-W35	€2373.58
2026-W36	€2373.58
2026-W37	€2373.58
2026-W38	€2373.58
2026-W39	€2373.58
2026-W40	€2373.58