40 cards where the illustration contains “sideburn”

Academy Researchers (Urza's Saga #58)
Alchemist's Apprentice (Avacyn Restored #42)
Aphetto Exterminator (Legions #59)
Arterial Flow (Rivals of Ixalan #62)
Cabal Torturer (Torment #53)
Cho-Arrim Alchemist (Mercadian Masques #8)
Cinder Seer (Urza's Destiny #78)
Circle of Protection: Red (Ice Age #15)
Claustrophobia (Innistrad #48)
Commander's Sphere (Secret Lair Drop #315)
Curiosity (Innistrad #49)
Elder Cathar (Innistrad #12)
Elder of Laurels (Innistrad #177)
Elvish Fury (Modern Horizons #162)
Faerie Spy (Unstable Tokens #4)
Farewell (Doctor Who #207)
Feasting Hobbit (Tales of Middle-earth Commander #37)
Feeling of Dread (Innistrad #14)
Geralf's Messenger (Dark Ascension #63)
Kessig Malcontents (Avacyn Restored #142)
Kithkin Soldier (Shadowmoor Tokens #1)
Kongming, "Sleeping Dragon" (Portal Three Kingdoms #9)
Lethal Throwdown (Modern Horizons 3 #99)
Make Your Mark (Strixhaven: School of Mages #204)
Murder (Eldritch Moon #97)
Nephalia Smuggler (Avacyn Restored #69)
Numbing Dose (New Phyrexia #40)
Persist (Modern Horizons 2 #96)
Pious Evangel // Wayward Disciple (Shadows over Innistrad #34)
Pious Evangel // Wayward Disciple (Shadows over Innistrad #34)
Remove Soul (Seventh Edition #95)
Rocco, Cabaretti Caterer (Streets of New Capenna #332)
Sage of Lat-Nam (Eighth Edition #97)
Silverblade Paladin (Avacyn Restored #36)
Springleaf Drum (Born of the Gods #162)
Staunch Defenders (Tempest #49)
Stern Judge (Torment #16)
Study Break (Strixhaven: School of Mages #34)
Summary Dismissal (Eldritch Moon #75)
Suspicious Nanny (Unstable #47)
Thryx, the Sudden Storm (Theros Beyond Death #76)

In the blink of an eye, they strode from deep snow to the end of this search.