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.

Qwilfish · HeartGold SoulSilver 50/123

Qwilfish (HeartGold SoulSilver 50/123), Uncommon, Basic, 70 HP. Market price €0.50, unchanged this week. Illustrated by Ken Sugimori. Prices are estimates from TCGPlayer and Cardmarket, not guaranteed values.

To fire its poison spikes, it must inflate its body by drinking over 2.6 gallons of water all at once.

Card text

Offensive Needle 30 — Flip a coin. If heads, the Defending Pokémon is now Poisoned. If tails, the Defending Pokémon is now Paralyzed.

Weekly price history

Week	Market price
2026-W31	€0.40
2026-W32	€0.44
2026-W33	€0.44
2026-W34	€0.49
2026-W35	€0.49
2026-W36	€0.51
2026-W37	€0.50
2026-W38	€0.50
2026-W39	€0.50

Printings & variants

Normal — $0.71
Reverse Holo — $4.41

Questions

How much is Qwilfish 50/123 worth?

Qwilfish from HeartGold SoulSilver (50/123) has a market estimate of €0.50, unchanged this week. Prices are estimates from TCGPlayer and Cardmarket.

Is Qwilfish 50/123 rare?

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

Is Qwilfish 50/123 tournament legal?

Qwilfish 50/123 has rotated out of the current formats.

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