From behind Solar Flare's barrier, you tell Empyrius that you will only fight if you must. However, with his champions defeated and his reputation in peril, you beseech him to surrender himself instead.
King Empyrius: "Surrender? Hmph. Mayhap you should have remained in the sewers, hidden among the other filthy rats who plague us from within. But such is the vainglory of the weak, I suppose.
No, it is not I who will surrender this day. For more champions will rise in time, and all that will be remembered are the cold ashes of another failed rebellion."
Smoke: "What's your problem? Do you just really enjoy making everyone's lives miserable?"
King Empyrius: "I have built this kingdom upon the noblest of virtues. A kingdom in which no pony goes to bed hungry — in which all are given a roof to keep them dry, and walls to keep them safe."
The dragon throws an accusatory claw in his direction.
Smoke: "Yeah, and at what cost? They work all day for scraps of bland food, and cower all night from your nightcrawlers. They're no better off than slaves, and they don't even know it. Not even the Dragon Lord is this cruel!"
King Empyrius: "You forget yourself. This is only the beginning; the darkness before the dawn. Once we reclaim the firmament for ourselves, Midgard will finally become the promised land it once was, as it was ever meant to be."
Solar Flare: "Rgh! You will do no such thing, you stubborn beast! I have carried out my mission; it is done!"
At that revelation, Empyrius's eyes flash with anger.
King Empyrius: "You fool! You will not deny us our birthright!"
From seemingly nowhere, a black aura grows and swirls around the false king. Soon, a massive cloud of darkness forms over the room, a field of glimmering stars in its obscurity, like a rift tearing through the fabric of reality and onto an otherworldly night sky.
King Empyrius: "It matters not how you came upon it — the Magnum Opus will be mine, one way or another. I am all-powerful! The sun shall belong to me!"
Then, as sunlight begins to dim beyond the horizon, twelve scarlet eyes slowly open, peering at you — through you —, unblinking.
Suddenly, you can see it; an amalgamation of horrors in the shape of a winged unicorn. Hundreds, if not thousands of nightcrawlers, peering from beyond, waiting for to be set free by the impending nightfall.