31 cards where the illustration contains “glimmer”

Arcane Signet (Duskmourn: House of Horror Commander #92)
Chittering Illuminator (Alchemy: Duskmourn #15)
Cynical Loner (Duskmourn: House of Horror #89)
Enduring Courage (Duskmourn: House of Horror #378)
Enduring Courage (Duskmourn: House of Horror #402)
Enduring Curiosity (Duskmourn: House of Horror #51)
Enduring Curiosity (Duskmourn: House of Horror #388)
Enduring Friendship (Alchemy: Duskmourn #20)
Enduring Innocence (Duskmourn: House of Horror #6)
Enduring Innocence (Duskmourn: House of Horror #386)
Enduring Tenacity (Duskmourn: House of Horror #95)
Enduring Tenacity (Duskmourn: House of Horror #390)
Enduring Vitality (Duskmourn: House of Horror #176)
Enduring Vitality (Duskmourn: House of Horror #394)
Ethereal Armor (Duskmourn: House of Horror #7)
Gilded Ambusher (Alchemy: Duskmourn #22)
Glimmer (Duskmourn: House of Horror Tokens #4)
Glimmerburst (Duskmourn: House of Horror #62)
Glimmerlight (Duskmourn: House of Horror #249)
Glimmer Seeker (Duskmourn: House of Horror #14)
Golden Sidekick (Alchemy: Duskmourn #23)
Inquisitive Glimmer (Duskmourn: House of Horror #217)
Lightning Greaves (Duskmourn: House of Horror Commander #93)
Lionheart Glimmer (Duskmourn: House of Horror #19)
Mischievous Lookout (Alchemy: Duskmourn #25)
Moon-Blessed Cleric (Duskmourn: House of Horror Commander #69)
Secret Arcade // Dusty Parlor (Duskmourn: House of Horror Commander #10)
Soaring Lightbringer (Duskmourn: House of Horror Commander #42)
Tunnel Surveyor (Duskmourn: House of Horror #76)
Valiant Emberkin (Alchemy: Duskmourn #28)
Wingbright Thief (Alchemy: Duskmourn #29)

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