Knowledge Exploitation is a rare Kindred Sorcery — Rogue card from Morningtide (MOR), collector number 38. Current market price: $7.88 (foil $31.85), TCGplayer market prices via Scryfall.
Prowl {3}{U} (You may cast this for its prowl cost if you dealt combat damage to a player this turn with a Rogue.) Search target opponent's library for an instant or sorcery card. You may cast that card without paying its mana cost. Then that player shuffles.