The Lords of Cthul in Monsterpocalypse are the ultimate tentacle monsters, and Osheroth is the most tentacly of them all. He’s a metamorph, meaning he’s not deployed on the table. Instead he (Do these things have genders, anyhow?) is represented by four tendrils burrowing around the battlefield. At an opportune moment these come together to be replaced by the monstrosity pictured left.