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.

Magmortar · Mysterious Treasures 12/123

Magmortar (Mysterious Treasures 12/123), Rare Holo, Stage1, 100 HP. Market price €4.36, unchanged this week. Illustrated by Hiroaki Ito. Prices are estimates from TCGPlayer and Cardmarket, not guaranteed values.

It blasts fireballs of over 3,600 degrees F from the ends of its arms. It lives in volcanic craters.

Magmortar (National Pokédex #467) first appeared in Pokémon Diamond and Pearl (2006). Its earliest English cards in our catalogue are from 2007: DP Black Star Promos, Mysterious Treasures, Secret Wonders.

More Magmortar printings

Card text

Smoke Bomb 30 — If the Defending Pokémon tries to attack during your opponent's next turn, your opponent flips a coin. If tails, that attack does nothing.
Flame Drum 80 — If Magby isn't anywhere under Magmortar, discard 2 Energy cards from your hand. (If you can't discard 2 Energy cards from your hand, this attack does nothing.)

Weekly price history

Week	Market price
2026-W31	€3.77
2026-W32	€3.79
2026-W33	€3.90
2026-W34	€3.84
2026-W35	€3.84
2026-W36	€3.86
2026-W37	€3.86
2026-W38	€3.85
2026-W39	€4.36
2026-W40	€4.36

Printings & variants

Holo — $7.11
Reverse Holo — $5.84

Price in context

Magmortar ranks #17 of the 119 priced cards in Mysterious Treasures. The median Rare Holo in the set is €5.17. The 119 priced cards in Mysterious Treasures are worth €393.93 together; this card is 1.11% of that. The set’s value is unchanged this week. Over the last 10 weeks the set’s value went from €343.84 to €393.93 (+14.6%).

Top chases in Mysterious Treasures

Lucario 122 — €83.21
Time-Space Distortion 124 — €49.76
Magmortar 123 — €44.36
Electivire 121 — €30.45
Alakazam 2 — €24.44

Set value over 10 weeks · same 119 cards each week
Week	Set value
2026-W31	€343.84
2026-W32	€343.12
2026-W33	€343.75
2026-W34	€366.58
2026-W35	€366.63
2026-W36	€384.02
2026-W37	€386.60
2026-W38	€390.99
2026-W39	€393.93
2026-W40	€393.93