Complex sentence: A wounded Saruman falls from the tower and dies when he is impaled by a spiked waterwheel, while his "palantír" is recovered by Pippin before Gandalf confiscates it.
Split into simpler sentences: A wounded Saruman falls from the tower and dies when he is impaled by a spiked waterwheel. His "palantír" is recovered by Pippin before Gandalf confiscates it.