Complex sentence: Duv was initially unaware of this, but his social and career prospects, not to mention his good looks, made him a prime target, although off-limits to Vor women because of his Komarran roots.
Split into simpler sentences: Duv was initially unaware of this, but his social and career prospects, not to mention his good looks, made him a prime target. He was also off-limits to Vor women because of his Komarran roots.