User blog:ImperiexSeed/Archangels in Season 7?

I've heard that the archangels were limited to only season five, but then Raphael made it into the sixth season, so I wonder will one appear in this one... In some religious text, it's said that only Michael and Gabriel can kill a Leviathan (main villains of season seven), which leads to, will one appear, through an escape, or resurrection?