Nocturnal Glow, the current Archmage of Canterlot, is dying. He has lived a long life, full of happiness and strife in equal measure. All unicorns must bow down to their successors, however... Twilight Sparkle is the most likely candidate to take his place. But she is going to need many lessons in magic before she is ready to assume his duties. So far, she has studied the magic of friendship, but what of the darker, and more primal magics? Twilight is going to need lessons from all three princesses before she's ready to become Archmage.
Collaborative effort with Iroh, my trusty prereader and friend.