Notes:

A Chosen of Chaos is a warrior marked out by one of the four chaos gods for doing something they found impressive or interesting and is in the process of either becoming a Chaos Lord or a, er, That-Which-Must-Not-Be-Named if they fail or can't handle the "gifts" bestowed upon them.

A Chosen of Nurgle attracts his grandfather's attention by acquiring a large number of his "gifts" and then passing them onto to others.