A spectral shadow-panther with fur made of swirling midnight smoke and crystalline obsidian bones, prowling across ancient desert dunes under a meteor shower, trailing ethereal smoke-wisps that transform into fleeting hourglass silhouettes, scientific field notes style with hand-drawn annotations mapping constellation positions and temporal anomaly measurements, palette of deep charcoal, luminous silver meteor trails, pale sand gold and soft twilight violet, Victorian natural history illustration aesthetic