Everypony knows that if you want your first child to be a colt, the bed has to be aligned towards sunrise. A filly? Eat this kind of hay two hours before sex. Earth pony, pegasus, unicorn... there's a myriad of superstitions which promise the guarantee of a chosen birth, along with ponies gullible enough to believe all of them.

Barnum and Bayleaf, mere hours removed from their wedding, are kind, gentle, and loving ponies. They want to raise a large family, they'll probably be great parents -- and for reasons known only to Sun and Moon, they've just decided to go for the trifecta: a mixed triplet birth. Something which will be achieved by following every necessary superstition, all at the same time.

...well, maybe they'll live.

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