Instrumental track for Suno, 5 minutes. Style: dark heavy metal — the advance of the Dark Lord. Ultra‑low bass dominates, setting a crushing, unstoppable pulse with heavy slides and punchy tones. Drums: relentless double kick, deep snares, dramatic crashes. Guitars: downtuned rhythm riffs, heavy distortion; leads stay midrange to keep low end king. Synth/orchestral: low strings, ominous brass (war horns), subtle sinister choirs. Tempo: 108–112 BPM, with pauses and sudden surges. Structure: bass+synth drone intro → layered build → breakdown (bass+drums only) → massive climax → lingering bass rumble + fading dark textures. Mood: oppressive, powerful, dark, inevitable. No vocals.