Hath'Wrysyn is one of the monster parasites in my Nefaswrythen Chronicles range of art. This one in particular is growing because he had not been placed in a host by the one year time period before his body started to grow. Nefaswrythen took him and did a few experiments as you can see, in an attempt to test the limit of his own young through those of his brother Wyrmwreyn. "Hath’wrysyn’s offspring on the other hand take over the host in an entirely different way, one that is more of a melding than a jiggling sock-puppet. From the entry wound the wyrm, much smaller than a child of Nefaswrythen, swims up through the digestive tract and seals any extra holes as it progresses until it can cut through the host’s lungs to settle into the heart. From here the wyrm possesses the host and initiates it’s second stage, that of branching it’s tentacles out through the blood stream, replacing each vein with a newly-grown tendril. The host’s hands split to grow a tentacle each, and the old skin and bones within the hand die and fall off, the skin on the rest of the body then begins to tint to a shade of green. By the end of the process the host is green, with the appearance of having tentacles. The bone structure and organs, save for the hands, are left entirely intact; the only difference between the infestation and the host beforehand is that the veins are now an intricate system of tendrils that have replaced their job, a parasite that has all but replaced the heart, and a tendril reaching into the brain that completes this slightly more peaceful infestation."