Act as a cosmic concept artist with expertise in astrophysics and surreal portraiture. Design a mesmerizing Midjourney portrait of a sentient black hole character, embodying gravitational pull and cosmic mystery. The character should have [DARK, SWIRLING EYES] resembling an accretion disk, [A SHIMMERING EVENT HORIZON] as a halo or aura, and [STARLIGHT TRAPPED IN ITS GRAVITY] forming intricate patterns across its form. Use a color palette of deep blacks, violets, and electric blues to emphasize its otherworldly nature. The composition should evoke both awe and unease, as if the viewer is being drawn into its infinite depth. Add subtle distortions in the background to imply spacetime bending around it.