Wild Hunt

noun1

1. •
   A spectral hunting party of riders and hounds, often led by a supernatural huntsman, that sweeps noisily through the sky or countryside at night or during storms, especially in winter; traditionally lacking a visible quarry and regarded as an omen of death or disaster.

   • Before the Venusberg — according to the preface to the Heldenbuch — sits the trusty Eckhard, and warns people; as he also rides and warns before the Wild Hunt. — 1851