Complex sentence: The Pulse, Mystics, Steel and Vixens are amalgamations of previous teams in their respective national competitions; the West Coast Fever are the renamed Perth Orioles, the New South Wales Swifts are the Sydney Swifts renamed, and the Tactix are the renamed Canterbury Flames.
Split into simpler sentences: The Pulse, Mystics, Steel and Vixens were formed as amalgamations of previous teams in their respective national competitions. The West Coast Fever were the renamed Perth Orioles, the New South Wales Swifts were the Sydney Swifts renamed, and the Tactix were the renamed Canterbury Flames.