Can I build a deck together with friends on TCGSwap?

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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?

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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.

Swarm of Rats · Ninth Edition 166★/710

Swarm of Rats (Ninth Edition 166★/710), Uncommon, Creature — Rat. Market price €4.49, up 1.6% this week, relatively stable over the last 11 weeks. Illustrated by Kev Walker. Prices are estimates from TCGPlayer and Cardmarket, not guaranteed values.

First printed in Portal Second Age on 24 June 1998.

More Swarm of Rats printings

Swarm of Rats · The List — €0.60
Swarm of Rats · Hachette UK
Swarm of Rats · Hachette UK
Swarm of Rats · Hachette UK
Swarm of Rats · Ninth Edition — €2.87
Swarm of Rats · Salvat 2005
Swarm of Rats · Salvat 2005 — €8.02
Swarm of Rats · Salvat 2005 — €8.02
Swarm of Rats · Eighth Edition — €2.00
Swarm of Rats · Eighth Edition — €11.15
Swarm of Rats · Portal Second Age — €2.02

Weekly price history

Over the last 11 weeks it has sold for between €4.31 and €4.49. That is up 1.7% from €4.42 10 weeks ago. Right now it is at its highest tracked price.

Week	Market price
2026-W31	€4.42
2026-W32	€4.36
2026-W33	€4.35
2026-W34	€4.34
2026-W35	€4.31
2026-W36	€4.34
2026-W37	€4.33
2026-W38	€4.35
2026-W39	€4.38
2026-W40	€4.42
2026-W41	€4.49

Price in context

Swarm of Rats ranks #128 of the 694 priced cards in Ninth Edition. The median Uncommon in the set is €0.42. The 694 priced cards in Ninth Edition are worth €2900.64 together; this card is 0.15% of that. The set’s value is up 1.6% this week. Over the last 11 weeks the set’s value went from €2544.72 to €2796.91 (+9.9%).

Top chases in Ninth Edition

Fellwar Stone 297★ — €184.53
Biorhythm 231★ — €85.92
Grave Pact 135★ — €80.33
Seething Song 216★ — €79.13
Underground River 326★ — €71.39

Set value over 11 weeks · same 635 cards each week
Week	Set value
2026-W31	€2544.72
2026-W32	€2565.52
2026-W33	€2535.92
2026-W34	€2565.00
2026-W35	€2554.66
2026-W36	€2575.97
2026-W37	€2623.59
2026-W38	€2670.77
2026-W39	€2673.97
2026-W40	€2751.85
2026-W41	€2796.91