Casting a Power

When a character casts any power, the same basic rules are followed, regardless of the character's class or the power's effects.

Each power description in chapters 11 and 12 begins with a block of information, including the power's name, level, alignment (for Force powers), prerequisites (if it has any), casting time, range, and duration. The rest of a power entry describes the power's effect.

Power Alignments

Most force powers are aligned with one of the opposing sides of the Force—light and dark—while many fall somewhere in the middle—universal. You use your Wisdom for light side powers, Charisma for dark side powers, and Wisdom or Charisma for universal powers (your choice). Additionally, certain archetypes and feats offer benefits to using powers of a specific alignment.

Prerequisites

Certain force powers are built as more powerful version of previous powers. They require that you know the previous power before you can learn the new one, and you must retain knowledge of the previous power to be able to cast the new one. If you are learning two or more powers at the same time, you can learn a power at the same time that you learn its prerequisites.

For instance, to learn the knight speed force power you would first need to learn the burst of speed power, as indicated by its prerequisites.

Casting Time

Most powers require a single action to cast, but some powers require a bonus action, a reaction, or much more time to cast.

Bonus Action

A power cast with a bonus action is especially swift. You can only cast one 1st-level or higher power using your action or bonus action on each of your turns. Once you've done so, you can only cast at-will powers with your action or bonus action on this turn.

Reactions

Some powers can be cast as reactions. These powers take a fraction of a second to bring about and are cast in response to some event. If a power can be cast as a reaction, the power's description tells you exactly when you can do so.

Longer Casting Times

Certain powers require more time to cast: minutes or even hours. When you cast a power with a casting time longer than a single action or reaction, you must spend your action each turn casting the power, and you must maintain your concentration while you do so (see "Concentration" below). If your concentration is broken, the power fails, but you don't expend force or tech points. If you want to try casting the power again, you must start over.

Range

The target of a power must be within the power's range. For a power like shock, the target is a creature. For a power like explosion, the target is the point in space where the explosion occurs.

Most powers have ranges expressed in feet. Some power can target only a creature (including you) that you touch. Other powers, such as the shield power, affect only you. These powers have a range of self.

Powers that create cones or lines of effect that originate from you also have a range of self, indicating that the origin point of the power's effect must be you (see "Areas of Effect" later in this chapter).

Once a power is cast, its effects aren't limited by its range, unless the power's description says otherwise.

Duration

A power's duration is the length of time the power persists. A duration can be expressed in rounds, minutes, hours, or even years. Some powers specify that their effects last until the powers are dispelled or destroyed.

Instantaneous

Many powers are instantaneous. The power harms, heals, creates, or alters a creature or an object in a way that can't be dispelled, because its effect exists only for an instant.

Concentration

Some powers require you to maintain concentration in order to keep their effect active. If you lose concentration, such a power ends.

If a power must be maintained with concentration, that fact appears in its Duration entry, and the power specifies how long you can concentrate on it. You can end concentration at any time (no action required).

Normal activity, such as moving and attacking, doesn't interfere with concentration. The following factors can break concentration:

• Casting another power that requires concentration. You lose concentration on a power if you cast another power that requires concentration. You can't concentrate on two powers at once.
• Taking damage. Whenever you take damage while you are concentrating on a power, you must make a Constitution saving throw to maintain your concentration. The DC equals 10 or half the damage you take, whichever number is higher. If you take damage from multiple sources, such as a blaster shot and a force power, you make a separate saving throw for each source of damage.
• Being incapacitated or killed. You lose concentration on a power if you are incapacitated or if you die. The GM might also decide that certain environmental phenomena, such as turbulence on a ship or rocky terrain on a speeder, require you to succeed on a DC 10 Constitution saving throw to maintain concentration on a power.

Targets

A typical power requires you to pick one or more targets to be affected by the power's effect. A power's description tells you whether the power targets creatures, objects, or a point of origin for an area of effect (described below). Unless a power has a perceptible effect, a creature might not know it was targeted by a power at all. An effect like crackling lightning is obvious, but a more subtle effect, such as an attempt to read a creature's thoughts, typically goes unnoticed, unless a power says otherwise.

A Clear Path to the Target

To target something, you must have a clear path to it, so it can't be behind total cover.

If you place an area of effect at a point that you can't see and an obstruction, such as a wall, is between you and that point, the point of origin comes into being on the near side of that obstruction.

Targeting Yourself

If a power targets a creature of your choice, you can choose yourself, unless the creature must be hostile or specifically a creature other than you. If you are in the area of effect of a power you cast, you can target yourself.

Areas of Effect

Powers such as force storm and explosion cover an area, allowing them to affect multiple creatures at once.

A power's description specifies its area of effect, which typically has one of five different shapes: cone, cube, cylinder, line, or sphere. Every area of effect has a point of origin, a location from which the power's effect erupts. The rules for each shape specify how you position its point of origin. Typically, a point of origin is a point in space, but some powers have an area whose origin is a creature or an object.

A power's effect expands in straight lines from the point of origin. If no unblocked straight line extends from the point of origin to a location within the area of effect, that location isn't included in the power's area. To block one of these imaginary lines, an obstruction must provide total cover, as explained in chapter 9.

Cone

A cone extends in a direction you choose from its point of origin. A cone's width at a given point along its length is equal to that points distance from the point of origin. A cone's area of effect specifies its maximum length.

A cone's point of origin is not included in the cones area of effect, unless you decide otherwise.

Cube

You select a cube's point of origin, which lies anywhere on a face of the cubic effect. The cube's size is expressed as the length of each side.

A cube's point of origin is not included in the cube's area of effect, unless you decide otherwise.

Cylinder

A cylinder's point of origin is the center of a circle of a particular radius, as given in the power description. The circle must either be on the ground or at the height of the power effect. The energy in a cylinder expands in straight lines from the point of origin to the perimeter of the circle, forming the base of the cylinder. The power's effect then shoots up from the base or down from the top, to a distance equal to the height of the cylinder.

A cylinder's point of origin is included in the cylinder's area of effect.

Line

A line extends from its point of origin in a straight path up to its length and covers an area defined by its width. A line's point of origin is not included in the line's area of effect, unless you decide otherwise.

Sphere

You select a sphere's point of origin, and the sphere extends outward from that point. The sphere's size is expressed as a radius in feet that extends from the point.

A sphere's point of origin is included in the sphere's area of effect.

Saving Throws

Many powers specify that a target can make a saving throw to avoid some or all of a power's effects. The power specifies the ability that the target uses for the save and what happens on a success or failure.

The DC to resist one of your powers equals 8 + your force- or tech-casting ability modifier + your proficiency bonus + any special modifiers.

Attack Rolls

Some powers require the caster to make an attack roll to determine whether the power effect hits the intended target. Your attack bonus with a power attack equals your force- or tech-casting ability modifier + your proficiency bonus. Most powers that require attack rolls involve ranged attacks. Remember that you have disadvantage on a ranged attack roll if you are within 5 feet of a hostile creature that can see you and that isn't incapacitated (see chapter 9).

Combining Effects

The effects of different powers add together while the durations of those powers overlap. The effects of the same power cast multiple times—or identical effects from separate powers—don't combine, however. Instead, the most potent effect~such as the highest bonus—from those castings applies while their durations overlap.

For example, if two consulars cast guidance on the same target, that character gains the power's benefit only once; he or she doesn't get to roll two bonus dice. Alternatively, if a character is targeted by both knight speed and tactical advantage, they only gain the benefits once.