Complex sentence: In the fictional Warhammer Fantasy setting of the tabletop miniature wargame, Warhammer Fantasy Battle, Magnus the Pious was a noble who reunited the fantasy kingdom of the Empire, saving it from the largest invasion of the Dark Gods of Chaos in its history.
Split into simpler sentences: In the fictional Warhammer Fantasy setting of the tabletop miniature wargame, Warhammer Fantasy Battle, Magnus the Pious is a fictional character. He is a noble who reunited the fantasy kingdom of the Empire, saving it from the largest invasion of the Dark Gods of Chaos in its history.