There is a great and terrible cloud of darkness fluttering overhead, echoing off the rock and stone with the leather like wing beats of fluttering monsters and the rancid smell of death, along with the telltale tang of rotting flesh. The cloud, hoving above the town like a murder of crows, circles the portal. Gargoyle feet tear at the tree tops, as their heavy bodies crash though the woods. The animals of the woods flee in a stampede of tiny mammals, deer, and hopping bunnies as the creatures barrel though the forest like a boulder through a field of reeds.
The creatures land, in uniform succession, nine hundred pound soldier caste gargoyles, with short, stubby wings, thick horns, and claws over a foot long. They land in front of the portal, creating a corridor of predator , and their thick shiny hides turn grey as thy enter a stone like stasis, waiting.