How do bonus actions work with spells?
In the world of Dungeons & Dragons (D&D), bonus actions are a feature that allows characters to perform additional actions during their turn, apart from their standard actions and reactions. One common scenario where bonus actions are useful is when casting spells. In this article, we’ll explore how bonus actions work with spells in D&D.
A Special Ability, a Spell, or a Feature?
Before we dive into the details, let’s clarify what a bonus action is. According to the 5th edition of the D&D rulebook, a bonus action is an ability that you can use only when a special ability, a spell, or a feature of the game states that you can do something as a bonus action. A bonus action is a way to get extra work done, outside of your standard actions. [1]
The General Rule
In most cases, when a character uses a bonus action, they can’t take any further actions that round (a "bonus action" is used when an ability or effect gives you an extra chance to perform an action in your turn). This is stated in the " Bonus Action" section of the PHB (Player’s Handbook):
"You can take only one bonus action on your turn. You take a bonus action in addition to your regular action, such as making an attack, casting a spell, or doing something else."
However, there are exceptions, and we’ll cover them below.
Spells as Bonus Actions
Spells can be used as bonus actions, and when this is the case, the rules apply similarly. You can only cast a spell that can be cast as a bonus action, specifically. The rules allow for some exceptions:
Cantrips:
- Cantrips with a casting time of 1 action can be cast as a bonus action.
- Some spells can be cast as a bonus action.
When casting a cantrip, you can still only take one additional action that round. It doesn’t matter what your primary action was. (source: DnDBeyond)
Other Spells
Spells that can be cast as a bonus action might not be cantrips with a casting time of 1 action. The rules state:
"The description of the spell in this book will let you know if it can be cast as a bonus action. If it says nothing, it can’t."
Source: Player’s Handbook
Here is a table highlighting key information:
| Casting Time | Can be cast as Bonus Action? | Note |
|---|---|---|
| 1 Action | Any Cantrip with 1 action casting time. | |
| Varied | May need to check specific spell descriptions. |
How does this work? Example Time!
To demonstrate the rules, let’s assume you’re playing as a Bard, using the "Hindering Zephyr" spell ( source: D&D Sourcebook: Xanathar’s Guide to Everything ).
In the spell description:
"A soothing breeze blows for up to 1 hour. You or a willing creature within 5 feet of you has a +1 to all ability checks.
Cast as a bonus action (1 minute casting time, no concentration)"
- Here, the 1-minute casting time does not matter since you’re casting the spell as a bonus action.
- This "Hindering Zephyr" can only be cast once per turn.