Your search for "Imperious Oligarch 184" revealed the following:
Imperious Oligarch (RNA) from Ravnica Allegiance, available at 401 Games Canada. Rarity: Common Finish: Normal Artist: Johannes Voss Card Text:VigilanceAfterlife 1 (When this creature dies, create a 1/1 white and black Spirit creature token with flying.)
Imperious Oligarch (Foil) (RNA) from Ravnica Allegiance, available at 401 Games Canada. Rarity: Common Finish: Foil Artist: Johannes Voss Card Text:VigilanceAfterlife 1 (When this creature dies, create a 1/1 white and black Spirit creature token with flying.)