Complex sentence: Looking out across the land at his destroyed people, Alcadizaar fell into despair, and took Nagash's crown and stumbled around his empty kingdom being driven mad by his ordeal and the warpstone blade of the Skaven.
Split into simpler sentences: Looking out across the land at his destroyed people, Alcadizaar fell into despair. He took Nagash's crown and stumbled around his empty kingdom being driven mad by his ordeal and the warpstone blade of the Skaven.