Tamiyo's Journal is a rare Legendary Artifact — Book card from The List (PLST), collector number SOI-265. Current market price: $2.97, TCGplayer market prices via Scryfall.
At the beginning of your upkeep, investigate. (Create a Clue token. It's an artifact with "{2}, Sacrifice this token: Draw a card.") {T}, Sacrifice three Clues: Search your library for a card, put that card into your hand, then shuffle.