38 cards where the illustration contains “leyline”

Bonds of Mortality (Oath of the Gatewatch #128)
Fall of the Titans (Oath of the Gatewatch #109)
Fiery Confluence (Commander 2015 #26)
Galvanoth (Mirrodin Besieged #62)
Karn Liberated (Double Masters #333)
Leyline Immersion (March of the Machine: The Aftermath #21)
Leyline Immersion (March of the Machine: The Aftermath #71)
Leyline of Abundance (Core Set 2020 #179)
Leyline of Abundance (Wilds of Eldraine: Enchanting Tales #56)
Leyline of Anticipation (Core Set 2020 #64)
Leyline of Combustion (Core Set 2020 #148)
Leyline of Lifeforce (Guildpact #90)
Leyline of Lightning (Guildpact #68)
Leyline of Punishment (Magic 2011 #148)
Leyline of Sanctity (Core Set 2020 #26)
Leyline of Sanctity (Wilds of Eldraine: Enchanting Tales #10)
Leyline of Singularity (Guildpact #29)
Leyline of the Guildpact (Murders at Karlov Manor #217)
Leyline of the Meek (Guildpact #10)
Leyline of the Void (Core Set 2020 #107)
Leyline of the Void (Guildpact #52)
Leyline of the Void (Wilds of Eldraine: Enchanting Tales #30)
Leyline of Vitality (Magic 2011 #183)
Leyline Prowler (War of the Spark #202)
Maze Abomination (Dragon's Maze #26)
Maze Behemoth (Dragon's Maze #43)
Maze Glider (Dragon's Maze #13)
Maze Rusher (Dragon's Maze #33)
Maze Sentinel (Dragon's Maze #4)
Mystic Confluence (Commander 2015 #14)
Plains (Jumpstart #39)
Righteous Confluence (Commander 2015 #7)
Twiddle (Limited Edition Alpha #85)
Urza's Mine (Double Masters #370)
Urza's Power Plant (Double Masters #371)
Urza's Tower (Double Masters #372)
Verdant Confluence (Commander 2015 #40)
Wretched Confluence (Commander 2015 #23)

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