Siren of the void

I finally bred a frostallion noct with Siren of the void and now i am breeding it with a frostallion noct that doesnt have to try and get another that does. Will that work or no? My buddy is doing a more insane task he wants to breed Siren of the void legendary lord of the underworld ice emperor. Is that possible or no? Pretty much we have one Frostallion Noct that just has Siren of the void and the one we are now breeding it with has legendary lord of the underworld and ice emperor. Can we get one with all four or no? Cuz right now we haven't gotten one with any good passives or Siren of the Void so what are we doing wrong?