Complex sentence: Sometimes a Samodiva would seduce a man, commonly a shepherd or a trespasser in her forest, and take him as her lover-however, in doing so she would take all of his life energy, his essence.
Split into simpler sentences: Sometimes a Samodiva would seduce a man, commonly a shepherd or a trespasser in her forest, and take him as her lover. However, in doing so, she would take all of his life energy, his essence.