Sift Through Sands is a common Instant — Arcane card from Champions of Kamigawa (CHK), collector number 84. Current market price: $0.12 (foil $1.19), TCGplayer market prices via Scryfall.
Draw two cards, then discard a card. If you've cast a spell named Peer Through Depths and a spell named Reach Through Mists this turn, you may search your library for a card named The Unspeakable, put it onto the battlefield, then shuffle.