Terrorgheist

The Terrorgheist is the nightmare at the top of the gravetide's food chain: a colossal undead bat, ragged-winged and rot-blown, that kills without needing to touch. Its death-shriek bursts hearts and shatters minds across whole regiments, and the tattered holes in its wings seem only to make it faster, as if the thing flies on hunger rather than air.

In life the great cave-bats of Shyish gorged and slept; in undeath the hunger remains and the sleep does not. The Gravelords loose them the way mortal generals loose artillery, and a legion's approach is often announced by the silence a Terrorgheist leaves behind it: garrisons found unmarked at their posts, faces frozen, hearts stopped in their chests.