Secrets of the Key [Innistrad: Double Feature]

Set: Innistrad: Double Feature Type: Instant Rarity: Common Cost: {U} Investigate. If this spell was cast from a graveyard, investigate twice instead. (Create a Clue token. It's an artifact with "{2}, Sacrifice this artifact: Draw a card.")Flashback {3}{U} As Sigarda and Sorin battled, Arlinn and Teferi recovered the key from the Markov catacombs.