Once, long, long ago, you were a powerfull wizard king who conquered the world with an iron fist of death, despair, and fear. Quickly overcaming all opposition; soon none remained to hinder you. Nevertheless, this uncontested superiority quickly lead to intollerable doldrums and unceasing boredom. Until the only choice left was to retreat to a timeless limbo for a thousand years in the hopes of finding an adequite advesary upon your return; at least, that was the plan...
Only 634 years have passed since you removed yourself from time and fell into a deep slumber; prematurely brough back to the world by an intensely foolish creature; a godelin. A brief moment of apathy on your part allowed the summoning to complete unhindered, and ::poof:: you back in the plane of reality, but not without the dire consequences of an idiotic godelin shaman's blundered casting and a sick godelin's snot filled destruction of the pages needed to undo the damage...
You do return to a future completely alien from your time, one where your legend has been forgotten and lost to history, just as planned. However, you return without your powers, your might, or even a fully manifested physical body... To make matters worse, your mastery over death has been replaced with a penchant for pleasure... No longer are you a great necromancer spreading death and fear; now you are a Pleasuremancer, forced to rebuild your new empire on endless pleasure...
Well, at least it won't be the boring same ol' same ol'...