17 cards where the illustration contains “letter”

Cabaretti Charm (Streets of New Capenna #300)
Clue (Secret Lair Drop #348)
Courier Bat (Innistrad: Crimson Vow #102)
Dictation Quillograph (Unstable #175)
Dispatch Dispensary (Unstable #176)
Imperial Seal (Double Masters 2022 #79)
Imperial Seal (Double Masters 2022 #354)
Insufferable Syphon (Unstable #191)
Investigator's Journal (Innistrad: Crimson Vow #345)
Jacob Hauken, Inspector // Hauken's Insight (Innistrad: Crimson Vow #332)
Jacob Hauken, Inspector // Hauken's Insight (Innistrad: Crimson Vow #332)
Knowledge Exploitation (Morningtide #38)
Patriar's Seal (Commander Legends: Battle for Baldur's Gate #332)
Rumor Gatherer (Streets of New Capenna #29)
Village Messenger // Moonrise Intruder (Shadows over Innistrad #190)
Village Messenger // Moonrise Intruder (Shadows over Innistrad #190)
Wedding Announcement // Wedding Festivity (Innistrad: Crimson Vow #45)
Wedding Announcement // Wedding Festivity (Innistrad: Crimson Vow #45)
Wedding Invitation (Innistrad: Crimson Vow #260)
Wirewood Herald (Onslaught #302)

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