23 cards where the illustration contains “skin-lesion”

Cemetery Reaper (Magic 2010 #87)
Chittering Skitterling (Phyrexia: All Will Be One #87)
Engineered Plague (Urza's Legacy #51)
Entrails Feaster (Onslaught #143)
Fallen Ideal (Time Spiral #109)
Fetid Horror (Mirage #123)
Gnawing Zombie (Magic 2014 #99)
Krovikan Rot (Coldsnap #63)
Lim-Dûl's Hex (Ice Age #146)
Lotleth Troll (Return to Ravnica #177)
Patriarch's Desire (Odyssey #156)
Pestilence (Limited Edition Alpha #120)
Plaguebearer of Nurgle (Warhammer 40,000 Tokens #15)
Plague Rats (Limited Edition Alpha #121)
Pointy Finger of Doom (Unhinged #126)
Polluted Bonds (Shadowmoor #74)
Pox (Fifth Edition #189)
Smallpox (Magic 2012 #108)
Smallpox (Time Spiral #131)
Thirst (Mirage #99)
Traveling Plague (Odyssey #166)
Undead Minotaur (Magic 2014 #119)
Zombified (Unstable #75)

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