The descriptions of many spells and other features specify that they have an area of effect, which typically has one of six shapes. These shapes are defined below. An area of effect has a point of origin, a location from which the effect's energy erupts. The rules for each shape specify how to position its point of origin. If all straight lines extending from the point of origin to a location in the area of effect are blocked, that location isn't included in the area of effect. To block a line, an obstruction must provide [[Cover and Perception#Cover|Total Cover]]. If the creator of an area of effect places it at an unseen point and an obstruction – such as a wall – is between the creator and that point, the point of origin comes into being on the near side of the obstruction. # Cone A Cone is an area of effect that extends in straight lines from a point of origin in a direction its creator chooses. A Cone's width at any point along its length is equal to that point's distance from the point of origin. For example, a Cone is 15 feet wide at a point along its length that is 15 feet from the point of origin. The effect that creates a Cone specifies its maximum length. A Cone's point of origin isn't included in the area of effect unless its creator decides otherwise. # Cube A Cube is an area of effect that extends in straight lines from a point of origin located anywhere on a face of the Cube. The effect that creates a Cube specifies its size, which is the length of each side. A Cube's point of origin isn't included in the area of effect unless its creator decides otherwise. # Cylinder A Cylinder is an area of effect that extends in straight lines from a point of origin located at the centre of the circular top or bottom of the Cylinder. The effect that creates a Cylinder specifies the radius of the Cylinder's base and the Cylinder's height. A Cylinder's point of origin is included in the area of effect. # Emanation An Emanation is an area of effect that extends in straight lines from a creature or object in all directions. The effect that creates an Emanation specifies the distance it extends. An Emanation moves with the creature or object that is its origin unless it is instantaneous or a stationary effect. An Emanation's origin (creature or object) isn't included in the area of effect unless its creator decides otherwise. # Line A Line is an area of effect that extends from a point of origin in a straight path along its length and covers an area defined by its width. The effect that creates a Line specifies its length and width. # Sphere A Sphere is an area of effect that extends in straight lines from a point of origin outward in all directions. The effect that creates a Sphere specifies the distance it extends as the radius of the Sphere. A Sphere's point of origin is included in the Sphere's area of effect.