Ö creature: Grimmblar

Bad luck is something that strikes everyone, it could be something as simple as tripping over a stray branch, or dropping a knife and accidentally cutting yourself. But when even the most graceful of cats jump and fail to land right, and lambs come out stillborn at an alarming rate, the supersticious suspect a Grimmblar might have hidden in the village. For the layman they are just another monster, a hideous being with a bloated head posing a toothy maw, resting upon a small and stunted body, easily dealt with by the experienced hunters of the Nightened ones. Those that are schooled in the abominable however know them as something more sinisted, seeming to always take respite in places ready to be reaped by the forces from beyond the bright and the Night, an Overseer from the plane of Chaos.
Despite not being a great fighter, the truth is even the most experienced warriors struggle to kill the Grimmblars, for how do you fight something that causes the swordswing to always spoil.