For your pleasure and entertainment, here we present, thirty fiendlings seasoned with a whiff of brimstone, teasingly clad in shadow, accompanied by tunes played on pipes of angel-bone; likewise do we tell of the gifts they might bestow upon one in their favor.
So get them before Hell freezes over!
"Binding the Life Coil" is an ancient quasi-mystical technique rediscovered to prolong one's life at the expense of one reproductive ability. It is a simple magikal technique that anyone can learn (a skill or feat). The promise of near immortality or a lifespan of a thousand years or more makes everyone want to learn it.
This technique has a price though, the amount of immortality is in direct response to the strength of ones reproductive spirit. Those that have never breed will live longer than those that have. The use of the technique makes conception difficult, if not impossible. So you trade the future of your society for the chance for you to see much of that future.