The Worthy Targaryen

What will happen when in place of just two Targaryen dying at the tragedy of Summerhall three others die instead, Rhaella Targaryen and her unborn child don't make it, and Aerys not bearing the grief over them passes away, but a new soul takes his place, the soul of a powerful Wizard from another World.
Westeros is about to experience what a Worthy Targaryen is.
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This is my first-ever attempt at writing fiction, I had a lot of thoughts in my head, and after reading countless fanfictions, here I am trying my hand at it.
English is not my first language.
there will be no Harem or Lemon, and I doubt there will be any romance either.
Wish me Luck.
I am positing this novel on multiple platforms, ff.net/SB/Ao3/AH/RR