Cthulhu is an intersideral, interplanar deity living in a sunken city, sleeping deep in the ocean. It was represented in ML by an Epic (with cool design BTW )
But now time has come to awaken the Great Old One as Lutum has fallen into his city, impowering him with awesome power !
It should be a monster with possession, nightmare, self healing, immune to possession and stun/freeze, stamina leak. Sea monster of the book of sea monsters.
Keep same design with longer tentacles and bigger wings, with lutum inserts on the body.
Should be called "Great Cthulhu"