War water has long been used as a curse of sorts. It is usually made in a sealed jar, using nails, moss, and water (optimally swamp water). Letting it oxidize for a week or so allows the nails to rust and moss to decompose, leaving you with a red or brown murky water that smells like a swamp. It is utilized by breaking the jar on the land or doorstep of the person you wish to be your target. Whoever walks through it will have a curse laid upon them.