Y'viris

Y'viris is a species of magical spider that uses other creatures as hosts to move around in. He is the size of a normal human hand and has a shiny black exoskeleton, with green eyes that glow faintly. His legs end in claws, which are used for burrowing into hosts, and his mandibles are unusually large.

Y'viris's venom is a powerful sleeping agent, able to knock out even the largest of creatures if enough is used. Once prey is knocked out, Y'viris burrows into their body until he reaches the heart, at which point he will produce a slimy substance from his spinnerettes. This substance will being replacing the host's blood, which will be expelled through their mouth. Once all blood is replaced, Y'viris will be able to control the host body. The substance also prevents decomposition for up to a week. A keen eye may be able to notice something off with the host body, as Y'viris must consciously make it breath and blink. The hosts also appear more gaunt the longer they have been controlled, as Y'viris feeds off of their nutrients. Y'viris cannot speak on his own, but if he can through a host with suitable vocal cords.