Cardery
Legendary Artifact — Book

Tamiyo's Journal

5
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.

Entry 855: There's more to Avacyn's madness . . .