Investigator's Journal is a rare Artifact — Book Clue card from Innistrad: Crimson Vow (VOW), collector number 258. Current market price: $0.32 (foil $0.34), TCGplayer market prices via Scryfall.
This artifact enters with a number of suspect counters on it equal to the greatest number of creatures a player controls. {2}, {T}, Remove a suspect counter from this artifact: Draw a card. {2}, Sacrifice this artifact: Draw a card.