The Waterveiled Assassin is a 16-foot tall elemental made of murky, swirling water, with bits of debris and bones suspended within its form. It moves silently and can meld seamlessly into water, becoming nearly invisible. This avatar of Olhydra, Prince of Evil Water Elementals, is a cunning hunter, capable of flowing through tiny cracks to ambush and engulf its prey. Its fluid form allows it to move through terrain effortlessly, making it a deadly adversary in aquatic environments. The assassin uses its liquid body to trap and grind its victims, exemplifying the lethal power of water .