"I read about a solar amulet and made it, but what do I do with it now?"
"Thank goodness!" Celestia said with great relief. "I knew an—amulet was used, but I forgot how to make it. All we need to do—now is make it and combine it with—Spherical Prison, a—uh—protection spell."
Twilight's ears perked up. "So that's why it didn't work for Starlight and me!"
Celestia appeared tired and weak, even with Luna's help.
"Are you alright, Celestia?"
"We just—must act with haste. I'm not sure—how much longer I can—keep this up."
"Okay, uh . . ." Twilight's head was rushing with what to do next. "Let's make the amulet so you can cast the spell again."
"I can't . . . You have—to. I can—ugh—teach it to you. Focus on the issue at hoof then say 'Shielgorus un sphericana etis impe—GAH!" Celestia loudly yelped.
She collapsed to the ground in terrible exhaustion. Her horn deactivated, prompting the collapse of the red-tinted bubble. The scorching heat of the sun was now allowed to torch all of Canterlot, and soon thereafter, Equus.