Complex sentence: In the end, the clones of Hydro-Man and Mary Jane Watson degenerate, though Warren is able to steal a sample of Spider-Man's DNA from a piece of his costume with the intent to clone him.
Split into simpler sentences: In the end, the clones of Hydro-Man and Mary Jane Watson degenerate. Though Warren is able to steal a sample of Spider-Man's DNA from a piece of his costume with interest to clone him.