The Sage Art: Massive Rasengan is a large, spherical energy construct with a swirling, vortex-like pattern that resembles a miniature hurricane. Its core emits a bright, luminous blue glow, surrounded by layers of rapidly rotating chakra that create a dynamic, layered effect. The surface is smooth yet highly detailed, with visible energy trails and occasional sparks of electricity, emphasizing its immense power. The Rasengan's proportions are large and imposing, designed to dominate the battlefield with its sheer size and visual impact.