A sketch of the amulet as described by Princess Celestia. Circa Celestial epoch 613.
"This is exactly what we were looking for, but this spell isn't the only thing we need."
"Right, the spell said it required a materialistic medium."
"An amulet!"
Twilight grabbed the Unabridged History of Amulets and quickly flipped through each page. "There it is!" she said excitedly, finding the section covering solar amulets. "Brightness . . . no, that won't help. Resistance . . . ugh, not that either. That is too small of a scale as well. Temperature . . . but the sun is also expanding, so this won't do. This is also too small a scale. Ah hah!" Twilight shouted excitedly, finding something of interest, "Protection!"
She translated the text from Pony Latin:
The Solar Amulet of Protective Amplification
A sketch of the amulet as described by Princess Celestia. Circa Celestial epoch 613.
This amulet boosts the power and scale of any protective spell that requires a physical medium and directs it at the sun. First created six-hundred-thirteen years after Princess Celestia's reign began. It existed for just a few minutes before bursting into flames and diminishing into mere embers upon use.
The Princess and Wizard of Canterlot attempted to recreate the amulet after its destruction but found no success. The joined pieces simply fell apart after assembly.
The Solar Amulet of Protective Amplification can only be crafted by a minimum of two magic-wielding entities. One or more must enchant the amulet with a chosen spell while one or more keep it stable during enchantment. Inferno Crystals, Gold, and Ruby are required to forge this amulet.
Twilight wiped beads of sweat from her forehead while she made her thoughts audible, "Circa 613? That was also 500 years ago, the same duration as Spherical Prison. I bet this amulet was used against the advancing sun before."
"That's how it must have been stopped last time," Starlight assessed.
. . .