Legend of Vexx

I recently redesigned my MLP Oc Vexx.
With each redesign (2 in total) including her original design are backstories.

I've combined each of her backstories into a plot.

I DO NOT OWN MY LITTLE PONY NOR DO I OWN MOST OF THE CHARACTERS. There is Vexx and Spectra, those are my two girls.

This is just a rough example of the plot.

PLOT

Yes, Vexx is immortal but she is not op, she's been defeated several times. Due to her past, her evil and good doings she was known as a legend across the land.

But she suddenly disappeared when a loved one of her's grew old and passed away.

Time went one, to the point that Twilight sparkle was old enough to rule equestria on her own.

But danger struck the land as never seen before creatures take over the land, and every bit of help is needed.

It becomes a war, the only safe places are cities where everything always seems normal when a certain group of determined ponies who want to fight in the strange war, accidentally stumble across a legend.

They read hundreds of books about her, which soon end on a hunt for this "goddess"

But during their journey they also meet Princess Twilight, who knew the legend when she was much younger. She ended up putting her niece and sister in law in charge of equestira as well as the Crystal empire as she joins this group to find her old friend.

Simple enough plot really.