Supergirl #3 Variant Edition

'REIGN OF THE CYBORG SUPERMEN' part three! At last, Supergirl returns to Argo City! But when Kara Zor-El arrives back to her childhood home, a grim discovery awaits, courtesy of the Cyborg Superman! Supergirl must battle for the fate of not one but two worlds as yet another face from her past returns to stop her!