The Legend Of Lichdom

very few have ever achieved lichdom, so few that people think its a myth, but the legend says to become a llich you must be undead, and drink the blood of a powerful celestial, the blood of a powerful devil, the blood of a powerful fey, then you need the strength to survive the transformation and be blessed by a hand of death such as a dullahan, a god of death, a reaper, etc. (to get the blessed by one of these creatures you must make them feel indebted to you), its a long painful transformation that the few who have made it this far even fewer have survived...