The foil version of Secrets of the Key, card number 73 from the 2021 Innistrad: Midnight Hunt expansion in the Magic: The Gathering trading card game.
Secrets of the Key
2021 • Magic: The Gathering • Innistrad: Midnight Hunt
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Market & Price History
| Condition | Value | Source | Trend | Price Details |
|---|---|---|---|---|
$0.23 | Guide Estimate | +15% | ||
- $0.23
- Source
- Guide Estimate
- Trend
- +15%
- Price Details
30-day Price History
Raw / Ungraded
TCGplayer Market (reference) · Guide Estimate evidence · captured Sep 15, 2026
Description
The 2021 release of Secrets of the Key represents a pivotal instant in the Magic: The Gathering trading card game, specifically from the Innistrad: Midnight Hunt expansion. As card number 73 in the set, this foil common delivers strategic utility through its unique mechanics. Designed by Alix Branwyn, the card features a mana cost of {U} and a mana value of 1, making it an efficient tool for blue-based strategies. Secrets of the Key is classified as an Instant, allowing players to cast it at instant speed for maximum flexibility. The card’s primary ability is Investigate, which creates a Clue token—an artifact that can be sacrificed for {2} to draw a card. This resource generation is particularly potent when Secrets of the Key is cast from the graveyard, triggering Investigate twice instead of once. This interaction allows players to cycle through their decks efficiently, maintaining hand size and pressure on opponents. Additionally, the card includes a Flashback cost of {3}{U}, enabling players to cast it from the graveyard even if it was not returned there via other means. This dual-mechanic design makes Secrets of the Key a versatile addition to competitive and casual playsets alike. Collectors of the Innistrad: Midnight Hunt set often seek out the foil version for its premium finish and aesthetic appeal, while players appreciate its consistent gameplay value. Whether building a control deck or a resource-heavy archetype, this card offers reliable card advantage. The combination of Investigate and Flashback ensures that Secrets of the Key remains relevant in various game states, providing both immediate impact and long-term utility. For those assembling their Innistrad: Midnight Hunt collection, the foil variant stands out as a desirable component of the set.
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Card Details
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Catalog Profile
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Featured Subject
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Featured
Secrets of the Key
Game
Magic: The Gathering
TCG Attributes
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Common
Alix Branwyn
Card Stock
English
Foil
{U}
Instant
U
Card Text
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Investigate. If this spell was cast from a graveyard, investigate twice instead. (Create a Clue token. It's an artifact with "{2}, Sacrifice this token: Draw a card.") Flashback {3}{U}
As Sigarda and Sorin battled, Arlinn and Teferi recovered the key from the Markov catacombs.






