Dungeons 2: A Game of Windigoes

This was a worst case scenario, The Desperately-In-Need-of-A-Cardboard-Box Evil had ended up alerting the largest and most important pegasus city to his presence, meaning they’ll have already sent a messenger to the Princesses.

Meaning they’re going to know he has returned and not at full power.

And if the Pony of Shadows, Discord and even Sombra have shown sufficiently, being found out immediately after being released without a plan or a moment to return to your full strength was bad… speaking of Discord, it might be that for all The Future-Knowledge-Having Evil knows, Discord might be reformed at this point, he hasn’t seen Ponyville, so he does not know if Twilight is a Princess or if the Crystal Castle has been grown by the Tree of Harmony.

The Panic-Attack-Experiencing Evil did not know if he could handle dealing with a Spirit of Chaos alongside three Princesses and The Elements of Harmony-

“COULD YOU NOT?! You’re not making my situation any easier!”

Right, sorry.

*ahem* now, The Corrupting Evil had to act immediately, while Cloudsdale had been alerted, it was still not truly prepared, so in response, he commanded the Ghosts occupying Dodge Junction to erupt in a spectral cyclone, rising up and encasing the floating city in a sphere of Ethereal Energy.

As expected, once the cage was in place the Pegasi moved to free themselves, The Strapped-For-Time Evil needed to work fast, erecting Obelisks around the town below, he proceeded to enact a plan to ensure the city could not move against him.

After all, The Big-Entrance-Loving Evil knew it was pointless to hide now, so he would reveal himself on his own terms. As the obelisks were complete, Nightmare stepped into the centre of Dodge Junction.

And began the ritual.

As this all happened, Celestia, the Solar Diarch of Equestria, the symbol of good and light all across the land!

*dry heave* I’m sorry, she’s just so… girly… *shudder*

Where was I? Oh right! Celestia had been speaking with Starlight Glimmer on a recent situation update that the unicorn needed to consult her on.

“So despite myself sensing the awakening of two powerful dark signatures, one shortly after the other, there was only a brief blackout because of a rumour… and nothing is wrong?” She asked after hearing the report, apparently it seemed that The Corrupting Evil’s awakening was more noticeable than he hoped.

“Yes, Princess Celestia, though I’m not so sure if that’s the truth.” Starlight replied, nervousness clear in her voice.

“Hm?”

“Well, when I saw Sunburst he looked… sickly, he said he was fine but his eyes were glassy, fur messy and… he sounded so tired, I feel maybe he got sick or…”

“I see, well we can look into the matter as soon as we can, but in the meantime we must keep a watch for… Starlight? Are you okay?”

But the pink unicorn was not okay, she was witnessing something emitting a terrifying green glow from a northern-facing window, and when Celestia turned to see the sight, she too was paralysed with fear.

Cloudsdale was burning in an eldritch green flame known only to Necromancy, being corrupted into a Necropolis, a floating stone city for the undead. She questioned the why, and how, some creature managed to do this, and questioned that very creature's identity.

She would not have to wait long for one of the answers, as from the geyser of undead energy came forth a terrifying vision of The Corrupting Evil, fully embracing his undead affinity and creating a projection to announce his awakening.

“Celestia…” the voice boomed, yet he did not yell, his magic sending his voice straight to canterlot itself, his tone was calm yet the palace shook with his words. “I told you I would be back.” the apparition raised its arm and aimed at the palace.

You see, thanks to the mass conversion of two entire provinces, not only did The Badass Evil gain enough evilness to unlock the Third Dungeon Level, he was now channeling the dark power all the new undead gave off through this ritual to send this message.

This was why Princess Celestia winced as visions were forced into her mind of his awakening and his plans.

“I may be only a third of my original self, but that does not make me weak, I will wash across your nation like a rotting tide of flesh and bone, I will walk up to your throne and take your sister as my queen as we bathe the land in my glorious shadow… and it will all be too easy because as you try to face me, my two more ruthless brothers will slaughter you to the last, it will all be too easy indeed.”

“Why… would you tell me your plan?”

The Ultra-Lich Evil gave a powerful, menacing and soul-chilling laugh. “Because you know where I am, you know what you want, you hate necromancy with all your heart, why wouldn’t you go after the big bad Corrupting Evil when I’m staying right here, not moving an inch as my siblings do all the work? I hear The Ultimate Evil’s minions love to eat ponies…” beneath the hood of The Devious Evil, he bared a monstrous grin. “I’m giving you an ultimatum, you either let me get away to stop my siblings, leaving me long enough to build defenses against your crusade, or you come after me now, hopelessly defenseless, but then that means you’ll leave your home unable to save itself from the other two Evils, allowing the Horde and Demons to reduce you to sex-slaves and ‘Horse-Salami’.” The Intimidating Evil didn’t need to push it so far, but for that added extra, he made sure to tilt her decision-making by showing her a vision of exactly what the Ultimate and Chaotic Evils would do if they had their way.

Celestia lost her lunch on the royal carpet that day, as well as her dinner, lunch, breakfast, supper and midnight snack from the previous day.

And with one more mad cackle, The Corrupting Evil faded away into the mists of undeath, leaving only the Necropolis in his wake, Celestia could feel from his power that he had spoke the truth in his words… all of it.

Including the plans his brothers had.

Immediately once she recovered, she rushed to her scrolls and began writing down letters to the various heroes' guilds, including Twilight and her friends, she had made her decision… and will need to live with the consequences.

<Dearest Twilight,

I write to you now with what will most likely be the strangest contradiction I make to you.

DO NOT PURSUE THE NECROMANCER! We have far worse to deal with than him…>

[Victory!]