Rhaegar targaryen and his dragon queens

Aegon the conquer and his sister-wife's Visenya, Rhaenys visit aerys in his sleep to tell three targaryen girls of the past will be born again as his daughters their names Daena targaryen the defiant, Rhaena targaryen, Elaena targaryen so his son rhaegar can pure blood valyrian wife's also Aegon tells aerys that rhaegar must marry lyanna stark to prevent house's stark, Baratheon, arryn, Tully raising in rebellion and to secure dorne rhaegar must marry elia martell as well. then Aegon shows aerys the greatest threat to the seven kingdoms the white walkers who are back and the seven kingdoms must be united against them to survive aerys does as his ancestors commands and has rhaegar marry his sisters and lyanna, elia, also to ensure aerys doesn't fall into madness Visenya casts a spell on aerys turning him into a man of honor.