17 cards where the illustration contains “turned-to-stone”

Annihilating Glare (Phyrexia: All Will Be One #80)
Brittle Blast (Alchemy: Innistrad #37)
Chain of Silence (Onslaught #12)
Elesh Norn, Mother of Machines (Phyrexia: All Will Be One #10)
Gaze of Granite (Dragon's Maze #72)
Gaze of the Gorgon (Ravnica: City of Guilds #246)
Greater Basilisk (Magic 2011 #180)
Grip of Chaos (Scourge #98)
Hythonia the Cruel (Theros #91)
Keepsake Gorgon (Theros #93)
Korozda Gorgon (Dragon's Maze #78)
Mire's Grasp (Theros Beyond Death #106)
Ossification (Phyrexia: All Will Be One #26)
Vraska's Stoneglare (Guilds of Ravnica #272)
Vraska, the Silencer (Outlaws of Thunder Junction #237)
Vraska the Unseen (Duel Decks: Jace vs. Vraska #42)
Xathrid Gorgon (Magic 2013 #118)

The message was clear to Sorin—time to search for something else.