imagine A large cat-like Matrioshka brain, embedded in nested glowing dyson spheres, simulating entire populated alternate universes, filled with sparkling artificial wormholes, Radiating power, cosmic engineering, Anders Sandberg, Damien Broderick, Kardashev type-IV civilization, Science Fiction movie, cinema4D, octane render, cosmic silver volumetric lighting, 4K UHD --vibefast