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.

Monstrous Growth · Portal 173†/257

Monstrous Growth (Portal 173†/257), Common, Sorcery. Market price €0.12, up 1.5% this week. Illustrated by Dan Frazier. Prices are estimates from TCGPlayer and Cardmarket, not guaranteed values.

First printed in Portal on 1 May 1997.

More Monstrous Growth printings

Monstrous Growth · The List — €0.11
Monstrous Growth · Eighth Edition — €0.10
Monstrous Growth · Eighth Edition — €0.31
Monstrous Growth · Seventh Edition — €0.08
Monstrous Growth · Seventh Edition — €7.22
Monstrous Growth · Starter 2000 — €0.45
Monstrous Growth · Starter 1999 — €0.08
Monstrous Growth · Portal Second Age — €0.35
Monstrous Growth · Portal — €0.15

Weekly price history

Over the last 11 weeks it has sold for between €0.11 and €0.15. That is down 22.3% from €0.15 10 weeks ago. Right now it is 22% below its tracked high.

Week	Market price
2026-W31	€0.15
2026-W32	€0.15
2026-W33	€0.12
2026-W34	€0.12
2026-W35	€0.12
2026-W36	€0.12
2026-W37	€0.12
2026-W38	€0.12
2026-W39	€0.12
2026-W40	€0.11
2026-W41	€0.12

Price in context

Monstrous Growth ranks #231 of the 257 priced cards in Portal. The median Common in the set is €0.23. The 257 priced cards in Portal are worth €1454.42 together; this card is less than 0.1% of that. The set’s value is up 1.7% this week. Over the last 11 weeks the set’s value went from €908.95 to €957.82 (+5.4%).

Top chases in Portal

Raise Dead 107s — €133.88
Elven Cache 164s — €133.88
Forest 213s — €133.87
Forest 212s — €120.48
Forest 215s — €107.10

Set value over 11 weeks · same 251 cards each week
Week	Set value
2026-W31	€908.95
2026-W32	€903.62
2026-W33	€911.29
2026-W34	€904.10
2026-W35	€899.76
2026-W36	€911.52
2026-W37	€909.36
2026-W38	€921.59
2026-W39	€923.96
2026-W40	€941.74
2026-W41	€957.82