[Atop the highest tower in his castle, the Overlord stands, a deep blue figure against the bright blue sky. The smirk on his face speaks of nothing but confidence and self-satisfaction.]Hey, Equestria. Look up.
[No sooner does he pronounce those words then the leading edge of a black disc surges across the sun high above, devouring its light in increasing gulps. Within seconds of its appearance, the great blackness eclipses the sun entirely. Darkness falls across the land like a shroud.]
[Mercifully, the eclipse only lasts a few seconds before the sun peeks around the corner of whatever is blocking its light. As quickly as it came, the black disc fades, relinquishing to the star its rightful place in the sky. Whatever it was, it can no longer be seen thanks to the solar brightness.]
[On the scroll, the Overlord's smirk has only grown wider.]That one I call Nemesis. It's a planet I've brought in, with the fortunate property that it's just the right size to eclipse the sun for Equestria from where I've dropped it. You'll see its counterpart, Antithesis, tonight, when it blocks the moonlight from you all for a little while.
[Zetta casually polishes one hoof on the fur of his chest with an abstract amusement, letting that sink in.] Oh, I'm sure you're not impressed by a short eclipse each day... but I don't expect you to be. It'll take me a couple of weeks to get these things tidally locked, so they block the sun and the moon both, rise to set. So you might want to spend the next couple of days enjoying this whole 'light' thing. Pretty soon it'll just be a fading memory... and Equestria will be plunged into eternal darkness. No sun, no moon, and no hope.
Unless your Princesses cede rulership of the land to me.
Hey, it's better than eternal darkness, right?
[Zetta smiles in false encouragement, making a 'come on' gesture with one hoof.] Of course if you doubt I'm serious, then I'm sure you could just do your best to take care of the crops and the animals and the weather and all that crap despite the diminishing sun. I figure you can keep it all together just fine if none of you waster your effort attacking me. At least, until eternal darkness falls.
Two weeks, Princesses. This world as a Netherworld is better than this world as a
dead world.