19 cards where the illustration contains “umbra”

Bear Umbra (Rise of the Eldrazi #177)
Boar Umbra (Rise of the Eldrazi #179)
Crab Umbra (Rise of the Eldrazi #58)
Dog Umbra (Modern Horizons 3 #22)
Drake Umbra (Rise of the Eldrazi #63)
Eel Umbra (Rise of the Eldrazi #65)
Eland Umbra (Rise of the Eldrazi #19)
Felidar Umbra (Planechase 2012 #6)
Hyena Umbra (Rise of the Eldrazi #26)
Indrik Umbra (Planechase 2012 #96)
Lion Umbra (Modern Horizons 3 #426)
Mammoth Umbra (Rise of the Eldrazi #37)
Mask (Commander 2018 Tokens #4)
Octopus Umbra (Commander 2018 #11)
Snake Umbra (Rise of the Eldrazi #207)
Spider Umbra (Rise of the Eldrazi #208)
Treefolk Umbra (Modern Horizons #185)
Umbra Mystic (Rise of the Eldrazi #52)
Wurmweaver Coil (Guildpact #99)

This search is finished. Now the real work can begin.