[The ignorance of the term is answer enough, and his hackles go back down.]

It's a type of necromancy. Magic users who decide they don't wanna die can do some messed up ritual to turn into a lich, it's dark shit and most of 'em are as evil as evil gets.

[There are rumors about what's required, to take on a lich form, and Taako doesn't know how true any of them are, but he knows it's not sunshine and fucking roses.]