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.

Team Aqua's Seviper · Double Crisis 9/34

Team Aqua's Seviper (Double Crisis 9/34), Common, Basic, 90 HP. Market price €3.15, unchanged this week. Illustrated by Naoki Saito. Prices are estimates from TCGPlayer and Cardmarket, not guaranteed values.

Seviper's tail is a sharp blade. It can even poison you!

Card text

Venomous Fang 10 — Flip a coin. If heads, your opponent's Active Pokémon is now Poisoned.
Venom Tail 30 — If your opponent's Active Pokémon is affected by a Special Condition, discard an Energy attached to that Pokémon.

Weekly price history

Week	Market price
2026-W31	€2.91
2026-W32	€3.08
2026-W33	€3.08
2026-W34	€2.96
2026-W35	€3.00
2026-W36	€3.15
2026-W37	€3.18
2026-W38	€3.15
2026-W39	€3.15

Printings & variants

Normal — $1.08

Questions

How much is Team Aqua's Seviper 9/34 worth?

Team Aqua's Seviper from Double Crisis (9/34) has a market estimate of €3.15, unchanged this week. Prices are estimates from TCGPlayer and Cardmarket.

Is Team Aqua's Seviper 9/34 rare?

It is a Common from Double Crisis, a 34-card set.

Is Team Aqua's Seviper 9/34 tournament legal?

Team Aqua's Seviper 9/34 is legal in Expanded.

Browse more Pokémon cards · All Double Crisis cards · Build a deck · Track your collection