There is more than one artist with this name:
MAGNUS were one of the pioneers of the thrashened death metal wave in Poland, formed in 1987. In the 80's, when this genre of metal was born, MAGNUS blazed a trail of an innovative style of fast and heavy play. They were the first band in Poland and one of the first in the world to highlight music with a controversial and rare image, as black uniforms filled with thorns were in those times. MAGNUS split up in 1997. Read more on Last.fm