Michael Moorcock's Elric Vol. 1: The Ruby Throne

Elric, the albino emperor, has ruled Melnibone for millennia - a feat made possible through magic and various herbs that serve to strengthen and prolong his life. However, Elric's empire is crumbling before him and now his envious cousin and prince of Melnibone, Yyrkoon, plots to claim the ruby throne for himself. Yet when Elric's people come under the threat of a pirate attack, Elric believes that he can once again restore his authority and regain their faith by defeating the pirates.