The Ethereal Marauder is a fearsome, predatory creature with a sleek, streamlined body that allows it to move swiftly between planes. Its skin is a dark, shimmering blue or purple with an almost metallic sheen, reflecting light in eerie patterns. The creature has three glowing, predatory eyes arranged in a triangular formation on its head, providing excellent vision. Its mouth is filled with rows of razor-sharp teeth, and it has long, powerful limbs ending in wicked claws. The Ethereal Marauder is a master of ambushes, using its ability to shift between the Material Plane and the Ethereal Plane to stalk and surprise its prey in areas with strong ethereal connections.