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.

Professor Sycamore · Steam Siege 114/114

Professor Sycamore (Steam Siege 114/114), Ultra Rare. Market price €9.60, up 0.5% this week. Illustrated by Yusuke Ohmura. Prices are estimates from TCGPlayer and Cardmarket, not guaranteed values.

Card text

Discard your hand and draw 7 cards.

Weekly price history

Week	Market price
2026-W31	€8.73
2026-W32	€8.54
2026-W33	€8.61
2026-W34	€9.00
2026-W35	€9.00
2026-W36	€8.98
2026-W37	€9.43
2026-W38	€9.55
2026-W39	€9.60

Questions

How much is Professor Sycamore 114/114 worth?

Professor Sycamore from Steam Siege (114/114) has a market estimate of €9.60, up 0.5% this week. Prices are estimates from TCGPlayer and Cardmarket.

Is Professor Sycamore 114/114 rare?

It is an Ultra Rare from Steam Siege, a 114-card set.

Is Professor Sycamore 114/114 tournament legal?

Professor Sycamore 114/114 is legal in Expanded.

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