>SCP-000
>Containment Class: Apollyon-Thaumiel
>Danger: Incalculable
>Disruption: SCP-000's true nature would likely cause 15x the harm of finding out that [REDACTED] isn't real

>Special Containment Protocols:
>SCP-000 cannot be physically contained by any currently-known mortal means.
>Containment of SCP-000 relies on making SCP-000 believe it is in control of its surroundings.
>To this end, SCP-000 is contained within an elaborate staged play centered around the core chambers of Site-001.
>SCP-000 is generally oblivious and unambitious so long as its ego is sated; within its containment center, it will be content to make sweeping and non-specific demands that are generally in line with the Foundation's mission.
>In the event of SCP-000 going afield and/or in any way directly interfering with Foundation operations, the risk of casualties and containment breaches increases astronomically.
>Do. Not. Let. This. Happen.
>MTF Round Table will carry out daily memetic incantations and rituals to keep SCP-000 in a state of self-containment.
>MTF Baker's Dozen will keep SCP-000 fed by any means necessary.
>SCP-000's containment measures are producing diminishing returns at a slow but steady rate.
>It is expected that containment will fail entirely within [REDACTED] years.
>Due to the extreme risk to morale and SCP-000's reach and influence, speculation as to the true cause of SCP-000 is strictly prohibited.

>Description:
>SCP-000 is a tall, white unicorn of aberrant musculoskeletal features; commonly referred to as Princess Celestia.
>Previously assumed to be a pony of great importance, recent and consistent patterns of events have put this into question.
>SCP-000 has displayed flagrant disregard for beings it commands(1), complete lack of tactical or strategic acumen(2), pettiness unbefitting of even a schoolfilly(3) and active hinderance towards those defending its person(4).
>While any long-lived creature is bound to take missteps, the recent extreme trend of these and other abnormal behaviors shows no sign of stopping.
>By unanimous O5 secret vote, SCP-000 was classified as Old and Stupid(5), and containment measures were seamlessly integrated through previous routines.
>Meg help us all if she finds out.

>1. Sending the six of us to FIGHT A GOD without even a doctor or a wilderness survival expert!?
>2. What about the wedding she insisted on when there was an army of bugs screaming that they wanted to invade?
>3. OOH! Speaking of wedding, she made Twilight cry and never apologized even after Twilight turned out to be right!
>4. Y'all 'member the Storm King? Don't we have big catapults? Seems like he should never have gotten close to Canterlot. Like, ever.
>5. Yea and verily and such, my sister really is a pill. And not the kind you take with your mouth.

*****

>Twilight flipped through the palacewarming present Celestia had left her
>An older model of Foundation journal, containing what Celestia considered their 'greatest hits.'
>Her diary synced with the tome and opened itself to a clean command page
>Welcome, user: O6 TWILIGGHT. Suggested page: SCP-000.
"Ha. I remember this one- we really thought Celestia had gone senile for a bit. Good times. Thankfully she was still Celestia so she just laughed about it."
>WARNING
>INVISIBLE INK DETECTED
>ATTEMPTING TO PARSE
>ADDITIONAL TEXT PRESENT
"What."
>LEXICOGRAPHICAL ENCHANTMENTS DETECTED
>TRIGGERING IN SANDBOX
>STANDBY
>ENCHANTMENT CONFERS SEAL OF AUTHORITY:
>HIDDEN TEXT SUPERCEDES PRIMARY TEXT VIA COMMAND AUTHORIZATION: FLUTTERPONY
>WARNING: UNKNOWN RUNIC FRACTALS STILL PRESENT.
>ESTIMATION: TARGETING PARAMETERS: G. G. G- ERggggOR
>REBOOTING IN SAFE MODE
>COMMENCING SECON-

>Twiligght frowned and put her quill to the magic paper.
"Negative. Display the document."
>LOG DUMPED TO JOURNAL NUMBER TWO
"I need to figure out what this is. SPIKE! No visitors until further notice!"
>"Didn't that book just warn you there might be more tra-"
"I always keep my inoculations up to date. Now go clear my schedule!"
>"You'd think YOU of all ponies would know not to rush into-"
>Spike slunk away as his sentence was cut off with a lavender glare from the lavender mare.

>SCP-000
>Containment Class: SHE IS COMPROMISED
"We did think that, didn't we? Heh."
>Danger: Total unsustainability of aetheric ecosystem. Subsequent collapse of all that we call 'Magic.'
>Disruption: Total societal collapse, possible failure of the entire Tree of Harmony project. Most optimistic projection predicts a return to pre-diarchy ethnocentric city-states.

>Twiligroght's eyebrows raised. Even her worst predictions about Celestia only amounted to more ponies in the nurse's office.

>Special Containment Protocols:
>SCP-000 is to be allowed to assume the Throne of Dusk and Dawn
>As per the cover document, bureaucratic rituals are to be used to keep herHIM/ pacified and removed from any actual running of operations.
>Keep everything orderly. Keep up with the routines. She likes routines, she likes her bookkeeping. Spike's little HANDS are so great for that, aren't they?
"Hm. They are indeed."
>Just act casual. Smooth transition of power. We can still fix this if we take TwiligGARht by surprise.
"They're talking about ME!? How dare they!"
>twiliGht spaRkle was nOt happy
"Something fishy is going on here!"
>the bad faith in her was just hurtful!
>sure, she used some inflammatory lanGuAge when plotting against celestia, but everypony's done that!
"But this? Total collapse of magic!? Ponies dwindling to scattered enclaves!? Failure of the-"
>she Really should stand up for herself! [spoiler]DREAMSCAPE ANOMALY DETECTED. PRIMING.[/spoiler]
>what was that about that stupid tree? what other secrets has the infernal princess kept?
"Tree of Harmony? Project? That's not ominous at all."
[spoiler]RED FLAG. TWILIGHT HAS BEEN BRIEFED ON SCP-11. SCP-000 INFECTION EARLIER THAN PREVIOUSLY SUSPECTED?.[/spoiler]
"No. No. I'm better than this. I'll just ask."

>Grrrrrr
>Really princess
>Of course it would be better if she read the entire thing right
>Good idea
>Attagirl
>Read

[spoiler]ANOMALY ISOLATED. PREPARING CONTINGENCY.[/spoiler]

>do it
>you know you want to
"OKAY! AUGH! My mind IS racing today- I suppose leaving this book unfinished won't do my mental state any favors."
>yes
>ha ha ha yes
>oh this is rich the sun nag is surrendering to me ha ha ha
>wait
>what
>oh no
>abort abort abort
>you stupid book horse abort
>there's a ward right at the end of that docum-

>Twilight suffered a migraine and fell on her plot
>At least she thinks that's what a migraine is, from Anon's descriptions
>What sort of horrible episode was she just having? They say everypony is their own worst critic but even Rarity never yelled at herself that much!
>Luckily, she had the instant pain relief of Book nearby
>Book!
>Open container!
>Apply words therin to the brain via ocular absorption!
>Be amazed as your durable kinderbrain reroutes pain signals to the lexiconic battery!
>It's that simple!


>Description:
>SCP-000 is a mind-disrupting spectral entity, strongly suspected of harmfully influencing ponies throughout recent centuries
>SCP-000 is suspected to be ponykind's oldest still-active enemy, in case the number didn't clue you in.
>Once a potential victim is targeted, SCP-000 will insert itself and be experienced as an intrusive thoughtform
>SCP-000 slowly asserts control by using the victim's existing quirks to mask its own desires, typically involving attaining total political power and/or slaves and/or removing ponykind's ability to defend themselves.
>Previous suspected victims include but are not limited to:
>Princess Luna
>The Great and Powerful Trixie (Beatrice Lulamoon)
>King Crystals 'Sombra' Crystals
>Sunset Shimmer
>Starlight Glimmer
>Stygian
>Cozy Glow
>Does Chrysalis count? She looks like a pony with diabetes legs, so I'll count her too.
>SCP-000's current host is suspected to be Twilight Sparkle
>Given the entity's age, power and experience, and Twilight's tendency to brute force her way through any magical scroll/tome/candy wrapper she can find-
>Princess Celestia is afraid she must declare [spoiler]she can cast Explosive Rune, you stupid sheep.[/spoiler]