@JeremyECrawford Do only some of the imps encountered in the 9 Hells have the ability to form the bond described in Variant: Imp Familiar?
— Millstone85 (@Stonemill1985) July 25, 2017
If a monster, like the imp or quasit, has a variant rule for being a familiar, the DM decides when and if that rule is used. #DnD https://t.co/59TEeOFw63
— Jeremy Crawford (@JeremyECrawford) July 26, 2017