@Background Pony  
The spell Twilight created was a culmination of her achievements - just that yes, out of context it looked like one event.
 
Other pages of this show that Celestia was looking for more than one moment of greatness and was evaluating Sunset’s overall worthiness.

Evil tag?  

“Do you get all your ideas from comic book villains?”

Hmph, “earned” is relatively weird when Cadence reformed an evil being, got a horn and became an alicorn princess, yet Twilight just “Fixed” a damn spell while Fluttershy managed to reform Discord, to a certain extent.
 
Still, Sunset Shimmer appears as a real bitch.

certain artist i know must having a super brutal BSOD because of this Sunset shimmer’s comic.

Celestia: The right of a god? Arrogant, even to the end.

FUCK,I WANT THIS ISSUE NAO!

I like her so much more now :3

I love Celestia when she’s angry!

OMG CELESTIA IS A SHARINGUN USER

@PonyPon  
This is before Twilight was Cele’s pupil. Likely Cele hid the books (and/or that these were in the dark magic section of the library, and Twilight would never have gone in there w/o permission)

“When you kick the ass of at least 2 godlike beings, then we can talk.”

just as i thought, from her very first appearance, a complete power hungry bitch, “i just want friends!”? complete BS, some ponies try to become her friends and she was a total bitch to them.

Angry Celestia and Sunset?
 

Wow, it was in a book? and Twi didn’t know?
 
That girl be slipping.

Oh this is gonna be good.

So this is the elusive Shimmer comic?

Oh boy! Love these start of darkness things!