# Calim Sandstorm *Environmental Hazard* Sandstorms arise quickly in the Calim desert, scouring the flesh of those caught inside. A Calim sandstorm is typically at least 300 feet in diameter and lasts **`1d6`** hours. The area of a Calim sandstorm is [Heavily Obscured](/3-Mechanics/CLI/variant-rules/heavily-obscured-xphb.md), and open flames in the area are extinguished. A creature makes a DC 10 Constitution saving throw after each hour spent in a sandstorm's area. On a failed save, the creature gains 1 [Exhaustion](/3-Mechanics/CLI/conditions.md#Exhaustion) level. *Source: Forgotten Realms: Adventures in Faerûn p. 134*