Celestial Archmage Conclave

painterly dark fantasy illustration, ancient elven archmage NPC standing atop a broken obsidian spire, one hand raised commanding a swirling ring of runes and starlight, tattered emerald robes etched with silver sigils, moonlit ruined city sinking into mist below, distant floating monoliths, sharp rim light from a crack in storm clouds above, drifting arcane embers and falling ash, solemn and intimidating mood of cosmic authority, deep teal and emerald contrasted with violent magenta and cold moon-blue, ultra-detailed fabrics and stone textures, subtle chromatic aberration, high-resolution digital painting realism