Spike notices Starlight hanging around him an awful lot just days after her reformation, and is determined to find out why.

Rainbow introduces Twilight to an extra special benefit to having pegasus magic.

Rainbow Dash learns her encounter with a speed spell left with her with a newfound power.

After seeing Twilight struggling with an impossible problem, Starlight decides to impress her by attempting to solve it. Emphasis on "attempting."

When a powerful unicorn stirs up trouble near the border of Equestria, Princess Celestia sends her most faithful student on a long journey to unravel the mystery surrounding this "Mare in the Mountains".

Starlight learns why you shouldn't cast a speed spell on the fastest pegasus in Equestria,

This is essentially a textbook combining various elements and characteristics of magic from the tv series, comics, and fanfictions in to an educational format.

When Part 2 of the Season 5 Finale was written, its author originally focused WAY too much on the magic fight between Twilight and Starlight. Although reduced to less than a minute in the final cut, the original would've taken an hour. Here's why. :)

When Twilight wakes up in a small room with no memory of what happened, panic begins to settle in as she realizes she may be trapped. Or she's been reading too many books ;)