14 cards where the illustration contains “summoning”

Blood Speaker (Champions of Kamigawa #103)
Chandra's Spitfire (Core Set 2020 #132)
Coax from the Blind Eternities (Eldritch Moon #51)
Dack's Duplicate (Conspiracy #43)
Demonic Rising (Avacyn Restored #94)
Demon of Catastrophes (Core Set 2019 #91)
Diviner's Portent (Forgotten Realms Commander #15)
Drownyard Temple (Shadows over Innistrad #271)
Elephant Guide (Conspiracy #162)
Epiphany at the Drownyard (Shadows over Innistrad #59)
Exultant Cultist (Eldritch Moon #59)
Introductions Are in Order (Archenemy Schemes #21★)
Perhaps You've Met My Cohort (DCI Promos #55)
Vodalian Mage (Fallen Empires #30b)

Though this query has ended, its relics still slumber in New Argive.