"Omniarch of Eternity: At the precipice where time and space converge, an entity of unparalleled might stands sentinel. Enshrouded in a mantle woven from stardust, eyes like twin black holes hold infinite knowledge and boundless power. The air around this figure resonates with the hum of creation itself - birthed not just once but across countless eons.  Behind the Omniarch, cosmic vistas unfold: galaxies birthing stars, supernovae seeding nebulas in a dance as old as time. A nexus of reality where past, present, and future intertwine under one all-encompassing gaze; an eternal sentinel guarding against entropy's relentless march."  This image encapsulates not just raw power but also the sublime beauty inherent to such omnipotent beings - a visual testament to their timeless dominion over existence itself.