Complex sentence: While Nymphs can and do engage in sexual activity with most sentient humanoids, they full reproduce only with Satyrs, the Satyr being a male version of the same species, and may produce a hybrid half-Nymph with Elves and other Fey creatures.
Split into simpler sentences: While Nymphs can and do engage in sexual activity with most sentient humanoids, they fully reproduce only with Satyrs, the Satyr being a male version of the same species. Nymphs may produce a hybrid half-Nymph with Elves and other Fey creatures.