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.

Flaaffy · HeartGold SoulSilver 42/123

Flaaffy (HeartGold SoulSilver 42/123), Uncommon, Stage1, 80 HP. Market price €0.42, up 7.7% this week. Illustrated by Masakazu Fukuda. Prices are estimates from TCGPlayer and Cardmarket, not guaranteed values.

As a result of storing too much electricity, it developed patches where even downy wool won’t grow.

Card text

Thunder Spear — Choose 1 of your opponent's Pokémon. This attack does 20 damage to that Pokémon. (Don't apply Weakness and Resistance for Benched Pokémon.)
Thundershock 40 — Flip a coin. If heads, the Defending Pokémon is now Paralyzed.

Weekly price history

Week	Market price
2026-W31	€0.33
2026-W32	€0.38
2026-W33	€0.38
2026-W34	€0.41
2026-W35	€0.43
2026-W36	€0.40
2026-W37	€0.42
2026-W38	€0.39
2026-W39	€0.42

Printings & variants

Normal — $1.19
Reverse Holo — $3.82

Questions

How much is Flaaffy 42/123 worth?

Flaaffy from HeartGold SoulSilver (42/123) has a market estimate of €0.42, up 7.7% this week. Prices are estimates from TCGPlayer and Cardmarket.

Is Flaaffy 42/123 rare?

It is an Uncommon from HeartGold SoulSilver, a 123-card set.

Is Flaaffy 42/123 tournament legal?

Flaaffy 42/123 has rotated out of the current formats.

Browse more Pokémon cards · All HeartGold SoulSilver cards · Build a deck · Track your collection