Luna,
I don't care how much fun you're having closing that Tartarus gate, get it done because they aren't waiting.
Your loving sister,
Celestia
To my most faithful student, Twilight Sparkle,
Twilight, I'm very glad your marefriend Trixie survived the experience of casting the spell, and will update the archives. Seriously though Twilight, Luna is wrapping up her business trip and will be there soon.
And for the record, yes this is technically necromancy. And for the record, there are crown assets in place to curb an undead uprising with extreme prejudice. I cannot legally protect you if this gets out of hoof, Twilight.
Please be safe,
Princess Celestia