It all began when the mega-rings were forged.
Three trial copies were given to the immortal Unicorns. Just to check if they would survive.
Then seven were given to the Pegasus from Baltimare.
And nine, nine rings were given to the earth pony race. And, as practice showed, in vain.
The power of the rings was limited. Each ring ruled its own race.
And then a smart guy came along and messed everything up.
In the lands of the Luna's Empire, on the black mountain, the gloomy lord empressluna.starchild secretly crafted a super-mega-ring for thirty-three years. And into this ring he planted all his cruelty, all his malice, all his bad habits and everything else.
That's how it went.