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.

Monastery Siege · Fate Reforged 43★/191

Monastery Siege (Fate Reforged 43★/191), Rare, Enchantment. Market price €1.96, unchanged this week. Illustrated by Mark Winters. Prices are estimates from TCGPlayer and Cardmarket, not guaranteed values.

First printed in Fate Reforged on 23 January 2015.

More Monastery Siege printings

Monastery Siege · Commander 2017 — €0.61
Monastery Siege · Fate Reforged — €0.98

Weekly price history

Over the last 11 weeks it has sold for between €1.93 and €2.14. That is up 1.6% from €1.93 10 weeks ago. Right now it is 8% below its tracked high.

Week	Market price
2026-W31	€1.93
2026-W32	€1.95
2026-W33	€1.95
2026-W34	€1.95
2026-W35	€1.95
2026-W36	€2.03
2026-W37	€2.14
2026-W38	€1.94
2026-W39	€1.94
2026-W40	€1.96
2026-W41	€1.96

Price in context

Monastery Siege ranks #5 of the 189 priced cards in Fate Reforged. The median Rare in the set is €0.30. The 189 priced cards in Fate Reforged are worth €62.34 together; this card is 3.14% of that. The set’s value is up 1.2% this week. Over the last 11 weeks the set’s value went from €63.01 to €62.34 (-1.1%).

Top chases in Fate Reforged

Ugin, the Spirit Dragon 1 — €9.67
Dark Deal 66 — €3.24
Temporal Trespass 55 — €2.56
Palace Siege 79★ — €2.00
Monastery Siege 43★ — €1.96 (This card)

Set value over 11 weeks · same 189 cards each week
Week	Set value
2026-W31	€63.01
2026-W32	€61.50
2026-W33	€61.86
2026-W34	€61.28
2026-W35	€60.84
2026-W36	€60.96
2026-W37	€60.89
2026-W38	€62.04
2026-W39	€62.33
2026-W40	€61.60
2026-W41	€62.34