The Pet Storm Atronach is a high-fantasy creature with a towering, humanoid form composed of crackling lightning and swirling storm clouds. Its body features a muscular, yet ethereal structure with jagged, angular limbs that emit a faint blue glow. The surface is highly textured, resembling turbulent storm clouds with occasional flashes of lightning coursing through its form. The head is crowned with a halo of electrical energy, and its eyes glow intensely, adding to its menacing presence. The overall color palette is dominated by deep blues, purples, and bright electric yellows, creating a vibrant and dynamic appearance.