By using Call of the Archfiend, you can discard The Fabled Ganashia in order to Special Summon 1 level 5 or higher Fiend-type monster from your Graveyard. The Fabled Ganashia will thus be Special Summoned to the Field as well.
Activates from your Graveyard
Banishes itself from field
Special Summons from your Graveyard / Special Summons itself