Complex sentence: At a racquetball court, Angel is sparring against Izzy, the red devil, who mentions that the leader of the Fell Brethren is very happy over the sacrificial baby Angel helped the Brethren to acquire.
Split into simpler sentences: At a racquetball court, Angel is sparring against Izzy, the red devil. Izzy mentions that the leader of the Fell Brethren is very happy over the sacrificial baby Angel helped the Brethren to acquire.