Description by commissioner:
““After the defeat of the outsider invaders, who had formerly upset the balance of Equestria in terrible ways by way of mind-controlling and subtly influencing much of the male population to enslave the other half for their own depraved amusement, many of the formerly enslaved clamored for the death of all stallions, outsider or otherwise, who had willingly participated in the indignities that marked the period that was named the Usurpation. But wise, kind Princess Celestia would have none of it. By channeling the power of the Tree of Harmony, the four Princesses were able to exact powerful changes upon Equestria’s inhabitants. Females were made into hermaphrodites to better usher in a new age of harmony between genders, while males were shrunken down to a more pliable size. No horns would be cut, no wings would be clipped; the erstwhile aggressors would be redeemed by tender loving prostate stimulation and a slight, surely harmless addiction to marecum. When away from these boons for long, males would grow restless, and so needed to be frequently pacified by their lovers’ turgid members.
It was Shining Armor who proposed the use of bronze, silver and golden collars to help teach males their new lot in Equestrian society, at least until redemption was achieved. In so doing, he became the first gold-collared stallion, so named for the golden rings attached to their collars. Such males enjoy many privileges over the more resistant, bronze-collared ones, such as occasional use of their appendages and greater independence, though they are usually loathe to be without the comforting , throbbing embrace of their females for long.
Princess Cadence of the Crystal Empire rewards her husband and Prince lavishly, pacifying him frequently to quell his needs and daily pumping liters of highly nutritious love juice into him.
Of all stallions, only Shining Armor knew the true meaning of the redemption plan, and what lied at the end of that warm, slimy road. He embraced it wholeheartedly.”
~Notes Toward the Recompilation of Equestrian History,”