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.

Mamoswine · Plasma Storm 28/135

Mamoswine (Plasma Storm 28/135), Rare, Stage2, 150 HP. Market price €1.14, down 0.9% this week. Illustrated by match. Prices are estimates from TCGPlayer and Cardmarket, not guaranteed values.

When the temperature rose at the end of the ice age, most Mamoswine disappeared.

Card text

Frost Stone 50 — Flip a coin. If heads, this attack does 20 more damage and the Defending Pokémon is now Paralyzed.
Continuous Headbutt 90 — Flip a coin until you get tails. This attack does 90 damage times the number of heads.

Weekly price history

Week	Market price
2026-W31	€0.93
2026-W32	€0.93
2026-W33	€0.93
2026-W34	€0.94
2026-W35	€0.94
2026-W36	€0.92
2026-W37	€1.15
2026-W38	€1.15
2026-W39	€1.14

Printings & variants

Normal — $0.89

Questions

How much is Mamoswine 28/135 worth?

Mamoswine from Plasma Storm (28/135) has a market estimate of €1.14, down 0.9% this week. Prices are estimates from TCGPlayer and Cardmarket.

Is Mamoswine 28/135 rare?

It is a Rare from Plasma Storm, a 135-card set.

Is Mamoswine 28/135 tournament legal?

Mamoswine 28/135 is legal in Expanded.

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