Cosmic Shapeshifter Knots You in Tangles (Patreon)

A succubus takes on a monstrous furry form with pulsing tentacles, seducing you and using her claws to mark you as her possession, leaving you writhing and shuddering with her eldritch pleasure. The demons beast girl form shifts into a shapeshifter nightmare, tentacles and fur, scales and claws, as she knots you in a writhing tangle of need you never knew existed.