Some deeds affect an area, a pattern of squares on the battlefield. When you attempt such a deed, instead of selecting individual creatures as targets, you choose where to place the pattern. You can place an area-of- effect anywhere on the battlefield, as long as at least one square of the pattern is within line of sight and falls within your range.
After you choose where to place the pattern, the creatures within those squares become targets. Unless otherwise stated, an area affects all creatures inside of it, not just enemies. An area-of-effect even targets creatures outside of your line-of-sight, but those targets gain cover against your deed (see "Line of Sight" above).
A blast affects a square pattern on the battle map. At least one square of the pattern must fall within your range. The accompanying value indicates the length of one side of the square: thus, a blast 4 would affect sixteen squares in a 4 x 4 area.
A close blast must be placed so that at least one of its edge or corner squares is adjacent to you. Otherwise, it follows the same rules as a normal blast.
A burst originates in your square and targets creatures in the specified range around you. For example, a burst 2 would affect all creatures within two squares of you. Harmful bursts, such as those created by attack deeds, don't harm you when you use them.
A melee burst targets all creatures in your melee weapon's reach. Most melee weapons have a reach of 1, while longer weapons have a range of 2.
A spell burst can target creatures within your spell range. Usually, such as effect only lets you target a handful of creatures within the area.
An aura is an effect that emanates around you in a radius. For example, an aura 4 affects
all squares within four squares of you, or all creatures in those squares, depending on the effect. While affected by an aura, it remains centered on you for the duration, even when you move.
A path is a snaking connection of squares. The initial square must fall within your range, but subsequent squares can travel beyond it. Paths must be connected edge-to-edge (no diagonals) and cannot form a 2-by-2 square at any point.
A close path must originate in an adjacent square and can then travel in any direction. Otherwise, it follows the same rules as a normal path.