Planeswalker

Planeswalkers are among the most powerful beings in the multiverse. Planeswalkers can be born at random in any sentient race, with no outward signs of their latent power. However, there is the incredibly remote chance that any given sentient, natural being is born with a planeswalkers' spark. When that being is put through a period of extreme stress -- in many cases, death -- the spark can trigger, causing the individual to ascend and become a planeswalker.

Planeswalkers have incredible magical capabilities, surpassing all but the most powerful mortal wizards. Planeswalkers lives can last indefinately, and their physical forms are matters of will. Finally, planeswalkers can travel between seperate universes with ease, while the vast majority of people throughout the multiverse are not even aware that other universes exist. Because of planeswalkers' prolonged lifespans and immense power -- some are worshipped as gods -- many end up somewhat insane, or at the very least, come to regard the lives of mortals in low esteem if they regard them at all.