Complex sentence: Shiva agreed, circumventing Brahma's boon by declaring that Darika would be killed by the goddess Kali, she being a woman and one not born among the humans.
Split into simpler sentences: Shiva agreed, circumventing Brahma's boon by declaring that Darika would be killed by the goddess Kali. Shiva opened his third eye and produced Kali, whose purpose was to destroy Darika.Goddess being a woman and one not born among the humans.