Rules Index


Source Core Rulebook pg. 304
The duration of a spell is how long the spell effect lasts. Spells that last for more than an instant have a Duration entry. A spell might last until the start or end of a turn, for some number of rounds, for minutes, or even longer. If a spell’s duration is given in rounds, the number of rounds remaining decreases by 1 at the start of each of the spellcaster’s turns, ending when the duration reaches 0.

Some spells have effects that remain even after the spell’s magic is gone. Any ongoing effect that isn’t part of the spell’s duration entry isn’t considered magical. For instance, a spell that creates a loud sound and has no duration might deafen someone for a time, even permanently. This deafness couldn’t be counteracted because it is not itself magical (though it might be cured by other magic, such as restore senses).

If a spell’s caster dies or is incapacitated during the spell’s duration, the spell remains in effect till its duration ends. You might need to keep track of the caster’s initiative after they stopped being able to act to monitor spell durations.

Sustaining Spells

Source Core Rulebook pg. 304
If the spell’s duration is “sustained,” it lasts until the end of your next turn unless you use a Sustain a Spell action on that turn to extend the duration of that spell.

Cast a Spell

Source Core Rulebook pg. 302
You cast a spell you have prepared or in your repertoire. Casting a Spell is a special activity that takes a variable number of actions depending on the spell, as listed in each spell’s stat block. As soon as the spellcasting actions are complete, the spell effect occurs.

Some spells are cast as a reaction or free action. In those cases, you Cast the Spell as a reaction or free action (as appropriate) instead of as an activity. Such cases will be noted in the spell’s stat block—for example, “[reaction] verbal.”

Long Casting Times Some spells take minutes or hours to cast. The Cast a Spell activity for these spells includes a mix of the listed spell components, but it’s not necessary to break down which one you’re providing at a given time. You can’t use other actions or reactions while casting such a spell, though at the GM’s discretion, you might be able to speak a few sentences. As with other activities that take a long time, these spells have the exploration trait, and you can’t cast them in an encounter. If combat breaks out while you’re casting one, your spell is disrupted (see Disrupted and Lost Spells on page 303).

Spell Components Each spell lists the spell components required to cast it after the action icons or text, such as “[three-actions] material, somatic, verbal." The spell components, described in detail below, add traits and requirements to the Cast a Spell activity. If you can’t provide the components, you fail to Cast the Spell.
  • Material (manipulate)
  • Somatic (manipulate)
  • Verbal (concentrate)
  • Focus (manipulate)
Disrupted and Lost Spells Some abilities and spells can disrupt a spell, causing it to have no effect and be lost. When you lose a spell, you’ve already expended the spell slot, spent the spell’s costs and actions, and used the Cast a Spell activity. If a spell is disrupted during a Sustain a Spell action, the spell immediately ends. The full rules for disrupting actions appear on page 462.

Long Durations

Source Core Rulebook pg. 305
If a spell’s duration says it lasts until your next daily preparations, on the next day you can refrain from preparing a new spell in that spell’s slot. (If you are a spontaneous caster, you can instead expend a spell slot during your preparations.) Doing so extends the spell’s duration until your next daily preparations. This effectively Sustains the Spell over a long period of time. If you prepare a new spell in the slot (or don’t expend a spell slot), the spell ends. You can’t do this if the spell didn’t come from one of your spell slots. If you are dead or otherwise incapacitated at the 24-hour mark after the time you Cast the Spell or the last time you extended its duration, the spell ends. Spells with an unlimited duration last until counteracted or Dismissed. You don’t need to keep a spell slot open for these spells.


Source Core Rulebook pg. 305
Some spells can be dismissed, ending the duration early. This requires the caster or target to use the Dismiss action.

Sustain a Spell Single Action

Source Core Rulebook pg. 304
Requirements You have at least one spell active with a sustained duration, and you are not fatigued.
Choose one spell with a sustained duration you have in effect. The duration of that spell continues until the end of your next turn. Some spells might have slightly different or expanded effects if you sustain them. Sustaining a Spell for more than 10 minutes (100 rounds) ends the spell and makes you fatigued unless the spell lists a different maximum duration (such as “sustained up to 1 minute” or “sustained up to 1 hour”).

If your Sustain a Spell action is disrupted, the spell immediately ends.