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Can I create an upright 7-foot × 5-foot wall with the Minor Illusion spell?

Can I use Minor Illusion to create a wall, hide behind it, and attack with advantage?How does orienting a cube-shaped spell work in three-dimensional space?Can I use Minor Illusion to create a wall, hide behind it, and attack with advantage?When Silent Image Is Disbelieved, Is It Transparent?Can you use Minor Illusion to create an illusion of a working mirror, i.e. with reflection?Minor Illusion as communication meansMinor Illusion as Camouflage?Can Kenku speak with minor illusion?Can Minor Illusion create sounds/images that the caster has never seen or heard?In the Spell “Guards and Wards” is there a size limit on the doors that can be affected as per the limitations on Minor Illusions?How would something passing through an illusion of fog or mist reveal it to be illusory?Does the Major Image spell allow the caster to fill the 20 ft cube with as many “body doubles” as he/she sees fit?

19

$begingroup$

The Minor Illusion spell description states:

If you create an image of an object—such as a chair, muddy footprints, or a small chest—it must be no larger than a 5-foot cube. The image can’t create sound, light, smell, or any other sensory effect. Physical interaction with the image reveals it to be an illusion, because things can pass through it.

(emphasis mine). My question is how to interpret this cube. If we rotate the cube vertically so that it looks like a diamond from the side (the cube in red in the drawing), i.e. the diagonal of the cube is vertical, then a 7ft by 5ft wall would certainly fit, since the diagonal (the blue line) is about 7ft long:

Much better drawing thanks to @Sdjz:

Is this "layout" of a cube valid for the Minor Illusion spell?

Note that this could potentially change the argument of the answer to "Can I use Minor Illusion to create a wall, hide behind it, and attack with advantage?".

Also related: How does orienting a cube-shaped spell work in three-dimensional space?

dnd-5e spells area-of-effect

share|improve this question

edited 6 mins ago

V2Blast

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asked 4 hours ago

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• 
  
  
  

  
  6
  

  
  
  
  
  
  

  
  $begingroup$
  I mean... I just like your drawing :) +1
  $endgroup$
  – David Coffron
  3 hours ago
  

  
  
  
  


• 
  
  
  

  
  1
  

  
  
  
  
  
  

  
  $begingroup$
  @Sdjz yeah, that's exactly what I attempted to draw :D I will include that, I think it will help people visualise it better than my "art".
  $endgroup$
  – Sebas
  57 mins ago
  

  
  
  
  


• 
  
  
  

  
  

  
  
  
  
  
  

  
  $begingroup$
  I really do love the drawing lol
  $endgroup$
  – Smart_TJ
  40 mins ago
  

  
  
  
  


• 
  
  
  

  
  

  
  
  
  
  
  

  
  $begingroup$
  Welcome to RPG.SE! Take the tour if you haven't already, and check out the help center for more guidance.
  $endgroup$
  – V2Blast
  8 mins ago
  

  
  
  
  

add a comment | 

19

$begingroup$

The Minor Illusion spell description states:

If you create an image of an object—such as a chair, muddy footprints, or a small chest—it must be no larger than a 5-foot cube. The image can’t create sound, light, smell, or any other sensory effect. Physical interaction with the image reveals it to be an illusion, because things can pass through it.

(emphasis mine). My question is how to interpret this cube. If we rotate the cube vertically so that it looks like a diamond from the side (the cube in red in the drawing), i.e. the diagonal of the cube is vertical, then a 7ft by 5ft wall would certainly fit, since the diagonal (the blue line) is about 7ft long:

Much better drawing thanks to @Sdjz:

Is this "layout" of a cube valid for the Minor Illusion spell?

Note that this could potentially change the argument of the answer to "Can I use Minor Illusion to create a wall, hide behind it, and attack with advantage?".

Also related: How does orienting a cube-shaped spell work in three-dimensional space?

dnd-5e spells area-of-effect

share|improve this question

edited 6 mins ago

V2Blast

25.6k488158

asked 4 hours ago

SebasSebas

1964

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Sebas is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
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$endgroup$

• 
  
  
  

  
  6
  

  
  
  
  
  
  

  
  $begingroup$
  I mean... I just like your drawing :) +1
  $endgroup$
  – David Coffron
  3 hours ago
  

  
  
  
  


• 
  
  
  

  
  1
  

  
  
  
  
  
  

  
  $begingroup$
  @Sdjz yeah, that's exactly what I attempted to draw :D I will include that, I think it will help people visualise it better than my "art".
  $endgroup$
  – Sebas
  57 mins ago
  

  
  
  
  


• 
  
  
  

  
  

  
  
  
  
  
  

  
  $begingroup$
  I really do love the drawing lol
  $endgroup$
  – Smart_TJ
  40 mins ago
  

  
  
  
  


• 
  
  
  

  
  

  
  
  
  
  
  

  
  $begingroup$
  Welcome to RPG.SE! Take the tour if you haven't already, and check out the help center for more guidance.
  $endgroup$
  – V2Blast
  8 mins ago
  

  
  
  
  

add a comment | 

$begingroup$

The Minor Illusion spell description states:

If you create an image of an object—such as a chair, muddy footprints, or a small chest—it must be no larger than a 5-foot cube. The image can’t create sound, light, smell, or any other sensory effect. Physical interaction with the image reveals it to be an illusion, because things can pass through it.

(emphasis mine). My question is how to interpret this cube. If we rotate the cube vertically so that it looks like a diamond from the side (the cube in red in the drawing), i.e. the diagonal of the cube is vertical, then a 7ft by 5ft wall would certainly fit, since the diagonal (the blue line) is about 7ft long:

Much better drawing thanks to @Sdjz:

Is this "layout" of a cube valid for the Minor Illusion spell?

Note that this could potentially change the argument of the answer to "Can I use Minor Illusion to create a wall, hide behind it, and attack with advantage?".

Also related: How does orienting a cube-shaped spell work in three-dimensional space?

dnd-5e spells area-of-effect

share|improve this question

edited 6 mins ago

V2Blast

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asked 4 hours ago

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share|improve this question

edited 6 mins ago

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share|improve this question

edited 6 mins ago

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edited 6 mins ago

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edited 6 mins ago

V2Blast

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asked 4 hours ago

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2 Answers
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17

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Yes, though a DM might not want to deal with abnormal spell positioning

In the Sage Advice compendium, a similar question was asked about the spell Cloud of Daggers:

Using 5-foot squares, does cloud of daggers affect a single square? Cloud of daggers (5 ft. cube) can affect more than one square on a grid, unless the DM says effects snap to the grid. There are many ways to position that cube.

While the Sage Advice article deals with a different spell, the matter is directly related to your question. To wit: "non-snapped" positioning of a spell's area of effect is legal, strictly speaking, though it might not fly with a DM who can house-rule otherwise.

share|improve this answer

edited 3 hours ago

answered 4 hours ago

RykaraRykara

4,532939

$endgroup$

• 
  
  
  

  
  1
  

  
  
  
  
  
  

  
  $begingroup$
  Why would it have a gap in the bottom? I assume you could make the wall/object pointy, so it fits in the edge of the cube.
  $endgroup$
  – Sebas
  3 hours ago
  

  
  
  
  


• 
  
  
  

  
  

  
  
  
  
  
  

  
  $begingroup$
  The wall is the blue part, and is rectangular.
  $endgroup$
  – Davo
  3 hours ago
  

  
  
  
  


• 
  
  
  

  
  2
  

  
  
  
  
  
  

  
  $begingroup$
  Oh, I misunderstood. I thought the wall was a cube turned on its edge to create a 7' tall barrier using the hypotenuse. Even so, it is contained within a 5' x 5' x 5' cube so it would be legal per my answer.
  $endgroup$
  – Rykara
  3 hours ago
  

  
  
  
  

add a comment | 

0

$begingroup$

The answer is technically yes.

Due to the wording of the spell, if the object (illusion) that you want to create fits within the 5 ft cube, you can use the spell to create it. However, like all interpretations of the rules in D&D, the DM makes the final decision. Especially in this scenario, the DM might decide that the theoretical cube (the size requirement) must be placed flat on the ground or something like that. What I'm trying to say, is that even if the DM allows it, they might not let it work the way that you want.

Good question. I really love that you are using your math to find loopholes in the rules; I'll have to remember to do that myself in the future. Hope this helped!

share|improve this answer

edited 5 mins ago

V2Blast

25.6k488158

answered 2 hours ago

Smart_TJSmart_TJ

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17

$begingroup$

Yes, though a DM might not want to deal with abnormal spell positioning

In the Sage Advice compendium, a similar question was asked about the spell Cloud of Daggers:

Using 5-foot squares, does cloud of daggers affect a single square? Cloud of daggers (5 ft. cube) can affect more than one square on a grid, unless the DM says effects snap to the grid. There are many ways to position that cube.

While the Sage Advice article deals with a different spell, the matter is directly related to your question. To wit: "non-snapped" positioning of a spell's area of effect is legal, strictly speaking, though it might not fly with a DM who can house-rule otherwise.

share|improve this answer

edited 3 hours ago

answered 4 hours ago

RykaraRykara

4,532939

$endgroup$

• 
  
  
  

  
  1
  

  
  
  
  
  
  

  
  $begingroup$
  Why would it have a gap in the bottom? I assume you could make the wall/object pointy, so it fits in the edge of the cube.
  $endgroup$
  – Sebas
  3 hours ago
  

  
  
  
  


• 
  
  
  

  
  

  
  
  
  
  
  

  
  $begingroup$
  The wall is the blue part, and is rectangular.
  $endgroup$
  – Davo
  3 hours ago
  

  
  
  
  


• 
  
  
  

  
  2
  

  
  
  
  
  
  

  
  $begingroup$
  Oh, I misunderstood. I thought the wall was a cube turned on its edge to create a 7' tall barrier using the hypotenuse. Even so, it is contained within a 5' x 5' x 5' cube so it would be legal per my answer.
  $endgroup$
  – Rykara
  3 hours ago
  

  
  
  
  

add a comment | 

17

$begingroup$

Yes, though a DM might not want to deal with abnormal spell positioning

In the Sage Advice compendium, a similar question was asked about the spell Cloud of Daggers:

Using 5-foot squares, does cloud of daggers affect a single square? Cloud of daggers (5 ft. cube) can affect more than one square on a grid, unless the DM says effects snap to the grid. There are many ways to position that cube.

While the Sage Advice article deals with a different spell, the matter is directly related to your question. To wit: "non-snapped" positioning of a spell's area of effect is legal, strictly speaking, though it might not fly with a DM who can house-rule otherwise.

share|improve this answer

edited 3 hours ago

answered 4 hours ago

RykaraRykara

4,532939

$endgroup$

• 
  
  
  

  
  1
  

  
  
  
  
  
  

  
  $begingroup$
  Why would it have a gap in the bottom? I assume you could make the wall/object pointy, so it fits in the edge of the cube.
  $endgroup$
  – Sebas
  3 hours ago
  

  
  
  
  


• 
  
  
  

  
  

  
  
  
  
  
  

  
  $begingroup$
  The wall is the blue part, and is rectangular.
  $endgroup$
  – Davo
  3 hours ago
  

  
  
  
  


• 
  
  
  

  
  2
  

  
  
  
  
  
  

  
  $begingroup$
  Oh, I misunderstood. I thought the wall was a cube turned on its edge to create a 7' tall barrier using the hypotenuse. Even so, it is contained within a 5' x 5' x 5' cube so it would be legal per my answer.
  $endgroup$
  – Rykara
  3 hours ago
  

  
  
  
  

add a comment | 

$begingroup$

Yes, though a DM might not want to deal with abnormal spell positioning

In the Sage Advice compendium, a similar question was asked about the spell Cloud of Daggers:

Using 5-foot squares, does cloud of daggers affect a single square? Cloud of daggers (5 ft. cube) can affect more than one square on a grid, unless the DM says effects snap to the grid. There are many ways to position that cube.

While the Sage Advice article deals with a different spell, the matter is directly related to your question. To wit: "non-snapped" positioning of a spell's area of effect is legal, strictly speaking, though it might not fly with a DM who can house-rule otherwise.

share|improve this answer

edited 3 hours ago

answered 4 hours ago

RykaraRykara

4,532939

$endgroup$

share|improve this answer

edited 3 hours ago

answered 4 hours ago

RykaraRykara

4,532939

answered 4 hours ago

RykaraRykara

4,532939

answered 4 hours ago

RykaraRykara

4,532939

0

$begingroup$

The answer is technically yes.

Due to the wording of the spell, if the object (illusion) that you want to create fits within the 5 ft cube, you can use the spell to create it. However, like all interpretations of the rules in D&D, the DM makes the final decision. Especially in this scenario, the DM might decide that the theoretical cube (the size requirement) must be placed flat on the ground or something like that. What I'm trying to say, is that even if the DM allows it, they might not let it work the way that you want.

Good question. I really love that you are using your math to find loopholes in the rules; I'll have to remember to do that myself in the future. Hope this helped!

share|improve this answer

edited 5 mins ago

V2Blast

25.6k488158

answered 2 hours ago

Smart_TJSmart_TJ

618

New contributor

Smart_TJ is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.

$endgroup$

add a comment | 

0

$begingroup$

The answer is technically yes.

Due to the wording of the spell, if the object (illusion) that you want to create fits within the 5 ft cube, you can use the spell to create it. However, like all interpretations of the rules in D&D, the DM makes the final decision. Especially in this scenario, the DM might decide that the theoretical cube (the size requirement) must be placed flat on the ground or something like that. What I'm trying to say, is that even if the DM allows it, they might not let it work the way that you want.

Good question. I really love that you are using your math to find loopholes in the rules; I'll have to remember to do that myself in the future. Hope this helped!

share|improve this answer

edited 5 mins ago

V2Blast

25.6k488158

answered 2 hours ago

Smart_TJSmart_TJ

618

New contributor

Smart_TJ is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.

$endgroup$

add a comment | 

$begingroup$

The answer is technically yes.

Due to the wording of the spell, if the object (illusion) that you want to create fits within the 5 ft cube, you can use the spell to create it. However, like all interpretations of the rules in D&D, the DM makes the final decision. Especially in this scenario, the DM might decide that the theoretical cube (the size requirement) must be placed flat on the ground or something like that. What I'm trying to say, is that even if the DM allows it, they might not let it work the way that you want.

Good question. I really love that you are using your math to find loopholes in the rules; I'll have to remember to do that myself in the future. Hope this helped!

share|improve this answer

edited 5 mins ago

V2Blast

25.6k488158

answered 2 hours ago

Smart_TJSmart_TJ

618

New contributor

Smart_TJ is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.

$endgroup$

share|improve this answer

edited 5 mins ago

V2Blast

25.6k488158

answered 2 hours ago

Smart_TJSmart_TJ

618

New contributor

Smart_TJ is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
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edited 5 mins ago

V2Blast

25.6k488158

edited 5 mins ago

V2Blast

25.6k488158

answered 2 hours ago

Smart_TJSmart_TJ

618

New contributor

Smart_TJ is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.

answered 2 hours ago

Smart_TJSmart_TJ

618