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.

Keeper of Secrets · Warhammer 40,000 Commander 78★/617

Keeper of Secrets (Warhammer 40,000 Commander 78★/617), Rare, Creature — Demon. Market price €15.32, down 1.7% this week, relatively stable over the last 11 weeks. Illustrated by Miguel Sacristan. Prices are estimates from TCGPlayer and Cardmarket, not guaranteed values.

First printed in Warhammer 40,000 Commander on 7 October 2022.

More Keeper of Secrets printings

Keeper of Secrets · Warhammer 40,000 Commander — €9.01

Weekly price history

Over the last 11 weeks it has sold for between €15.21 and €15.58. That is down 1.1% from €15.49 10 weeks ago.

Week	Market price
2026-W31	€15.49
2026-W32	€15.23
2026-W33	€15.32
2026-W34	€15.30
2026-W35	€15.21
2026-W36	€15.29
2026-W37	€15.26
2026-W38	€15.35
2026-W39	€15.43
2026-W40	€15.58
2026-W41	€15.32

Price in context

Keeper of Secrets ranks #44 of the 617 priced cards in Warhammer 40,000 Commander. The median Rare in the set is €2.34. The 617 priced cards in Warhammer 40,000 Commander are worth €2883.62 together; this card is 0.53% of that. The set’s value is up 1.6% this week. Over the last 11 weeks the set’s value went from €2767.38 to €2883.62 (+4.2%).

Top chases in Warhammer 40,000 Commander

Ghyrson Starn, Kelermorph 124★ — €98.23
Marneus Calgar 8 — €72.22
Bloodthirster 73★ — €52.96
Celestine, the Living Saint 10★ — €47.47
Sceptre of Eternal Glory 166★ — €43.45

Set value over 11 weeks · same 617 cards each week
Week	Set value
2026-W31	€2767.38
2026-W32	€2745.69
2026-W33	€2754.12
2026-W34	€2741.19
2026-W35	€2730.05
2026-W36	€2768.08
2026-W37	€2778.51
2026-W38	€2798.43
2026-W39	€2815.05
2026-W40	€2838.58
2026-W41	€2883.62

Every printing of Keeper of Secrets

Keeper of Secrets has 1 other printing across 1 set.

Warhammer 40,000 Commander 78 (2022) · Rare — €9.01

About the illustrator

Miguel Sacristan has illustrated 6 cards across 1 set.

Talisman of Dominance · Warhammer 40,000 Commander — €7.54
Aspiring Champion · Warhammer 40,000 Commander — €2.16

Legal in Legacy, Vintage, and Commander.

More from Warhammer 40,000 Commander

← Previous card: Keeper of Secrets 78 · Next card: Khârn the Betrayer 79 →

Questions

How much is Keeper of Secrets 78★/617 worth?

Keeper of Secrets from Warhammer 40,000 Commander (78★/617) has a market estimate of €15.32, down 1.7% this week. Prices are estimates from TCGPlayer and Cardmarket.

Is Keeper of Secrets 78★/617 rare?

It is a Rare from Warhammer 40,000 Commander, a 617-card set.

Has Keeper of Secrets been reprinted?

Yes — Keeper of Secrets has 1 other printing.

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