14 cards where the artist name includes “riot games”

Command Tower (Secret Lair Drop #697)
Counterflux (Secret Lair Drop #482)
Duress (Secret Lair Drop #479)
Forest (Secret Lair Drop #488)
Island (Secret Lair Drop #485)
Krosan Grip (Secret Lair Drop #481)
Mountain (Secret Lair Drop #487)
Path to Exile (Secret Lair Drop #477)
Plains (Secret Lair Drop #484)
Rhystic Study (Secret Lair Drop #478)
Seize the Day (Secret Lair Drop #480)
Spore Frog (Secret Lair Drop #696)
Swamp (Secret Lair Drop #486)
Thran Dynamo (Secret Lair Drop #483)

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