Fateful Absence is a rare Instant card from Innistrad: Midnight Hunt Promos (PMID), collector number 18s. Current market price: — (foil $1.23), TCGplayer market prices via Scryfall.
Destroy target creature or planeswalker. Its controller investigates. (They create a Clue token. It's an artifact with "{2}, Sacrifice this token: Draw a card.")