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Can I take an upcast spell as my Mystic Arcanum?

Mystic Arcanum class feature: Can you choose lower level spells at higher level?Would using a lower-leveled spell for the a Warlock's Mystic Arcanum feature impair balance?Mystic Arcanum class feature: Can you choose lower level spells at higher level?Does Sequester extend the duration of Conjure spells?Why choose Mass Suggestion over Suggestion?Is there any way for a wizard to summon a Celestial or Fey for Planar Binding?Would it be game breaking to allow a Warlock to use his Mystic Arcanum to cast his spells at a higher level?Would using a lower-leveled spell for the a Warlock's Mystic Arcanum feature impair balance?How are conjured creatures controlled?Is this Magister homebrew warlock patron balanced?

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4

$begingroup$

For example, say I have a warlock and want to be able to summon bhuer hags.

This is slightly problematic due to bhuer's having a CR 7, so could I take an upcast Conjure Fey as my 7th level Mystic Arcanum?

dnd-5e warlock

share|improve this question

asked 8 hours ago

Q PaulQ Paul

1,64066 silver badges3030 bronze badges

$endgroup$

• 
  
  
  

  
  

  
  
  
  
  
  

  
  $begingroup$
  Related: Mystic Arcanum class feature: Can you choose lower level spells at higher level?, Would using a lower-leveled spell for the a Warlock's Mystic Arcanum feature impair balance?
  $endgroup$
  – MikeQ
  6 hours ago
  

  
  
  
  

add a comment | 

4

$begingroup$

For example, say I have a warlock and want to be able to summon bhuer hags.

This is slightly problematic due to bhuer's having a CR 7, so could I take an upcast Conjure Fey as my 7th level Mystic Arcanum?

dnd-5e warlock

share|improve this question

asked 8 hours ago

Q PaulQ Paul

1,64066 silver badges3030 bronze badges

$endgroup$

• 
  
  
  

  
  

  
  
  
  
  
  

  
  $begingroup$
  Related: Mystic Arcanum class feature: Can you choose lower level spells at higher level?, Would using a lower-leveled spell for the a Warlock's Mystic Arcanum feature impair balance?
  $endgroup$
  – MikeQ
  6 hours ago
  

  
  
  
  

add a comment | 

$begingroup$

For example, say I have a warlock and want to be able to summon bhuer hags.

This is slightly problematic due to bhuer's having a CR 7, so could I take an upcast Conjure Fey as my 7th level Mystic Arcanum?

dnd-5e warlock

share|improve this question

asked 8 hours ago

Q PaulQ Paul

1,64066 silver badges3030 bronze badges

$endgroup$

share|improve this question

asked 8 hours ago

Q PaulQ Paul

1,64066 silver badges3030 bronze badges

share|improve this question

asked 8 hours ago

Q PaulQ Paul

1,64066 silver badges3030 bronze badges

asked 8 hours ago

Q PaulQ Paul

1,64066 silver badges3030 bronze badges

asked 8 hours ago

Q PaulQ Paul

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1 Answer
1

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oldest

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5

$begingroup$

You cannot do this

The Mystic Arcanum feature states:

Choose one Xth-level spell from the warlock spell list as this arcanum. You can cast your arcanum spell once without expending a spell slot. You must finish a long rest before you can do so again.

This requires to actually choose a spell of a certain level from your list, unfortunately the upcast version of a spell is not on your spell list and so cannot be chosen with this feature.

That said, houseruling this would likely not be game-breaking as most spells upcast to a given level are weaker than other spells of the same level.

share|improve this answer

answered 8 hours ago

Medix2Medix2

7,68722 gold badges2020 silver badges8282 bronze badges

$endgroup$

• 
  
  
  

  
  

  
  
  
  
  
  

  
  $begingroup$
  "Most spells upcast to a given level are weaker than other spells of the same level." Has this been conclusively demonstrated?
  $endgroup$
  – mdrichey
  7 hours ago
  
  

  
  
  
  


• 
  
  
  

  
  1
  

  
  
  
  
  
  

  
  $begingroup$
  @mdrichey This is true because higher level spells give you entirely knew capabilities instead of just increasing the power of previous ones. Summoning spells are one of the more edge-cases for this metric though, I'll admit
  $endgroup$
  – Medix2
  6 hours ago
  
  

  
  
  
  


• 
  
  
  

  
  

  
  
  
  
  
  

  
  $begingroup$
  @mdrichey Another proof of this is the existence of higher level spells. If upcast spells were better then nobody would ever get higher level spells
  $endgroup$
  – Medix2
  5 hours ago
  

  
  
  
  

add a comment | 

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5

$begingroup$

You cannot do this

The Mystic Arcanum feature states:

Choose one Xth-level spell from the warlock spell list as this arcanum. You can cast your arcanum spell once without expending a spell slot. You must finish a long rest before you can do so again.

This requires to actually choose a spell of a certain level from your list, unfortunately the upcast version of a spell is not on your spell list and so cannot be chosen with this feature.

That said, houseruling this would likely not be game-breaking as most spells upcast to a given level are weaker than other spells of the same level.

share|improve this answer

answered 8 hours ago

Medix2Medix2

7,68722 gold badges2020 silver badges8282 bronze badges

$endgroup$

• 
  
  
  

  
  

  
  
  
  
  
  

  
  $begingroup$
  "Most spells upcast to a given level are weaker than other spells of the same level." Has this been conclusively demonstrated?
  $endgroup$
  – mdrichey
  7 hours ago
  
  

  
  
  
  


• 
  
  
  

  
  1
  

  
  
  
  
  
  

  
  $begingroup$
  @mdrichey This is true because higher level spells give you entirely knew capabilities instead of just increasing the power of previous ones. Summoning spells are one of the more edge-cases for this metric though, I'll admit
  $endgroup$
  – Medix2
  6 hours ago
  
  

  
  
  
  


• 
  
  
  

  
  

  
  
  
  
  
  

  
  $begingroup$
  @mdrichey Another proof of this is the existence of higher level spells. If upcast spells were better then nobody would ever get higher level spells
  $endgroup$
  – Medix2
  5 hours ago
  

  
  
  
  

add a comment | 

5

$begingroup$

You cannot do this

The Mystic Arcanum feature states:

Choose one Xth-level spell from the warlock spell list as this arcanum. You can cast your arcanum spell once without expending a spell slot. You must finish a long rest before you can do so again.

This requires to actually choose a spell of a certain level from your list, unfortunately the upcast version of a spell is not on your spell list and so cannot be chosen with this feature.

That said, houseruling this would likely not be game-breaking as most spells upcast to a given level are weaker than other spells of the same level.

share|improve this answer

answered 8 hours ago

Medix2Medix2

7,68722 gold badges2020 silver badges8282 bronze badges

$endgroup$

• 
  
  
  

  
  

  
  
  
  
  
  

  
  $begingroup$
  "Most spells upcast to a given level are weaker than other spells of the same level." Has this been conclusively demonstrated?
  $endgroup$
  – mdrichey
  7 hours ago
  
  

  
  
  
  


• 
  
  
  

  
  1
  

  
  
  
  
  
  

  
  $begingroup$
  @mdrichey This is true because higher level spells give you entirely knew capabilities instead of just increasing the power of previous ones. Summoning spells are one of the more edge-cases for this metric though, I'll admit
  $endgroup$
  – Medix2
  6 hours ago
  
  

  
  
  
  


• 
  
  
  

  
  

  
  
  
  
  
  

  
  $begingroup$
  @mdrichey Another proof of this is the existence of higher level spells. If upcast spells were better then nobody would ever get higher level spells
  $endgroup$
  – Medix2
  5 hours ago
  

  
  
  
  

add a comment | 

$begingroup$

You cannot do this

The Mystic Arcanum feature states:

Choose one Xth-level spell from the warlock spell list as this arcanum. You can cast your arcanum spell once without expending a spell slot. You must finish a long rest before you can do so again.

This requires to actually choose a spell of a certain level from your list, unfortunately the upcast version of a spell is not on your spell list and so cannot be chosen with this feature.

That said, houseruling this would likely not be game-breaking as most spells upcast to a given level are weaker than other spells of the same level.

share|improve this answer

answered 8 hours ago

Medix2Medix2

7,68722 gold badges2020 silver badges8282 bronze badges

$endgroup$

share|improve this answer

answered 8 hours ago

Medix2Medix2

7,68722 gold badges2020 silver badges8282 bronze badges

answered 8 hours ago

Medix2Medix2

7,68722 gold badges2020 silver badges8282 bronze badges

answered 8 hours ago

Medix2Medix2

7,68722 gold badges2020 silver badges8282 bronze badges