14 cards where the illustration contains “blue-robe”

Arcum Dagsson (Coldsnap #27)
Family Reunion (The Lost Caverns of Ixalan #13)
Feywild Caretaker (Commander Legends: Battle for Baldur's Gate #69)
Grim Lavamancer (Torment #100)
Hisoka's Defiance (Champions of Kamigawa #67)
Historian of Zhalfir (Core Set 2021 #325)
Index (Apocalypse #25)
Information Dealer (Onslaught #88)
Midnight Pathlighter (Forgotten Realms Commander #52)
Share the Spoils (Forgotten Realms Commander #34)
Steel Exemplar (The Brothers' War #246)
Strategic Planning (Strixhaven Mystical Archive #20)
Teferi, Timebender (Dominaria #270)
Urza's Rage (Duel Decks: Phyrexia vs. the Coalition #36)

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