Can Detect Magic Detect Traps? A Comprehensive Guide
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The short answer is: yes, but with important caveats. Detect magic can detect a magical trap, but it won’t necessarily reveal its specific nature or location. The spell only indicates the presence of magic within a certain radius. To be more specific, it alerts you to the fact that something magical is present and what school of magic that is.
This article delves into the nuances of how detect magic interacts with traps, explores its limitations, and offers insights into the best methods for uncovering hidden dangers in tabletop role-playing games like D&D 5e and Pathfinder. We’ll also answer a lot of frequently asked questions to make you a trap-detecting expert!
Understanding Detect Magic and Traps
Before we dive deeper, let’s establish a clear understanding of the core mechanics involved.
How Detect Magic Works
The detect magic spell (common across many TTRPG systems) allows a caster to sense the presence of magic within a specific range, typically 30 feet. When magic is sensed, a caster can use their action to see a faint aura around any visible, magical creature or object in the area, and learn its school of magic, if any.
Important limitations include:
- It cannot detect spellcasters while concentrating on spells.
- It cannot detect items or creatures created by instantaneous spells.
- It cannot detect itself.
How Traps Work
Traps are generally hidden mechanisms designed to harm or hinder adventurers. They can be mechanical, magical, or a combination of both. Detection of traps usually involves skills like Perception (Wisdom) or sometimes Investigation (Intelligence).
A character actively searching for traps typically makes a Perception check against a set Difficulty Class (DC). Alternatively, a character’s passive Perception score is compared to the DC to see if they notice a trap in passing.
Detect Magic and Magical Traps: What You Need to Know
Given these two systems, here’s a breakdown of how detect magic interacts with magical traps:
- Detection of Presence: Detect magic will indicate that there is a magical aura surrounding the trap, but not what it is. This gives a character clues that there is something abnormal in the area, but doesn’t point out where the trap is specifically.
- School of Magic: The caster will be able to determine the school of magic associated with the trap. This might include schools like abjuration, evocation, illusion, or necromancy depending on the type of trap.
- Limitations: Detect magic is not a trap-finding spell. It is just a magic-detecting spell. It will not pinpoint the location of the trap, nor does it automatically disarm the trap. Just knowing the school of magic does not tell what the trap does.
- Time Requirement: The player must spend an action to pinpoint the magic and learn its school. It does not happen instantaneously.
- Obstacles: The spell can be blocked by one foot of stone, one inch of metal, a thin sheet of lead, or three feet of wood or dirt. Walls and other barriers can hide magic from this spell.
Best Practices for Trap Detection
When dealing with traps, here’s a layered approach that combines detect magic with traditional trap-finding methods:
- Initial Scan: Use detect magic to identify any magical auras in the area. This can be a helpful initial scan.
- Focused Search: If a magical aura is detected, use skills like Perception and Investigation to examine the area more carefully. Focus on places where traps are most likely to be hidden like doors, hallways, and around treasure chests.
- Rogue’s Expertise: Rogues are experts in trap detection, so any rogue characters in your party can contribute to this effort using their class features.
- Disarming: Once a trap is discovered, determine the appropriate method for disarming it. There is no disarm action, but many traps can be disarmed with tools or skill checks. Other traps may require spells to disable or dispel them.
Frequently Asked Questions (FAQs)
To further clarify the interaction between detect magic and traps, let’s explore some common questions.
Can Detect Magic See Through Walls?
The spell can penetrate most barriers, but it is blocked by 1 foot of stone, 1 inch of common metal, a thin sheet of lead, or 3 feet of wood or dirt.
Can Detect Magic Detect Invisible Stalkers?
Detect magic cannot be used to detect invisible creatures or objects as it requires a visible target to examine and see the magic aura.
What Skill Do You Need to Detect Traps?
Most of the time, use Perception (Wisdom) to detect most traps because it is about noticing something and is what most players expect. However, if a player states “I want to use Investigation to look for a trap”, this should be encouraged as it can represent actively looking for the trap.
Can a Rogue Detect Magic Traps?
Rogues are trained to detect traps, and many traps are magical, making it reasonable for them to detect one.
Is a Trap Set to Detect?
In computer terminology, a honeypot is a trap set to detect, deflect, or, in some manner, counteract attempts at unauthorized use of information systems. Traps in a game are not generally set to detect the characters, they are set to hinder them, but some traps may alert if triggered which makes them detection devices, too.
Will Detect Magic Detect a Curse?
Detect magic works to detect magical effects. You would be able to tell if a character is under the effect of magic, but not that they were cursed. You’d need to specifically use a remove curse spell to remove it and dispel magic to remove a spell effect.
Does Detect Magic Detect Concentration?
Detect magic will detect the magic being used when someone is concentrating on a spell, not the concentration itself.
Can Detect Magic Detect Monsters?
Detect magic will detect spells in progress, spell-like powers of monsters, and permanent enchantments on scrolls, and standard magic weapons. It will not detect supernatural powers or that something is demonic.
Can Detect Magic Detect Antimagic?
Detect Magic would sense a Moderate or Strong Abjuration aura when looking at the Antimagic Field (AMF), but nothing within the field.
Can Detect Magic See Sorcerers?
Detect magic will not sense that a sorcerer or other spellcaster is using their magic unless they are actively casting a spell.
Does Detect Magic Detect Supernatural Abilities?
Spell-like abilities and supernatural abilities are just like spells, and one of the ways they are like spells is that they are picked up by detect magic.
Can Rogues Disarm Traps?
Yes, being able to disarm traps is a part of the Disable Device skill, which Rogues have as a class feature.
Are Hunter Traps Invisible?
Hunter traps may be invisible until an area is entered. All players, when they come within about 10 yards of a trap, will see the trap. This visibility is only if they are within range, it does not show the entire range of a trap.
Does Passive Perception Detect Traps?
Passive Perception can notice traps, concealed doors, and the like, but not all of the types. For example, pits might not be able to be found by passive perception.
Can Detect Magic See Scrying?
Yes, the Scrying sensor can be sensed with detect magic. The spell creates an invisible sensor within 10ft of the target, which appears to creatures who can see invisible things as a luminous orb.
Conclusion
Detect magic can be a powerful tool for detecting magical traps, but it’s not a one-stop solution. Combining it with careful Perception, Investigation, and a healthy dose of caution is the best way to navigate treacherous environments. By understanding the capabilities and limitations of detect magic, you can enhance your character’s ability to survive and thrive in your tabletop role-playing adventures.