Knowledge Exploitation (Morningtide)

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.

NM - $7.50
LP - $6.00
MP - $4.50
HP - $3.00
DMG - $1.50