Does Enlarge/Reduce also reduce a monster’s max hit points?

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From the Monster Manual intro, on p. 7, under "Hit Points":




A monster's size determines the die used to calculate its hit points, as shown in the Hit Dice by Size table.




Enlarge/Reduce gives an option to reduce the target's creature size by one level.




Reduce. The target's size is halved in all dimensions, and its weight is reduced to one-eighth of normal. This reduction decreases its size by one category - from Medium to Small, for example.




When a creature's Constitution modifier decreases, its maximum hit points decrease as well.



Following this logic, does using Reduce on a monster also reduce its maximum hit points?










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    From the Monster Manual intro, on p. 7, under "Hit Points":




    A monster's size determines the die used to calculate its hit points, as shown in the Hit Dice by Size table.




    Enlarge/Reduce gives an option to reduce the target's creature size by one level.




    Reduce. The target's size is halved in all dimensions, and its weight is reduced to one-eighth of normal. This reduction decreases its size by one category - from Medium to Small, for example.




    When a creature's Constitution modifier decreases, its maximum hit points decrease as well.



    Following this logic, does using Reduce on a monster also reduce its maximum hit points?










    share|improve this question

























      up vote
      2
      down vote

      favorite









      up vote
      2
      down vote

      favorite











      From the Monster Manual intro, on p. 7, under "Hit Points":




      A monster's size determines the die used to calculate its hit points, as shown in the Hit Dice by Size table.




      Enlarge/Reduce gives an option to reduce the target's creature size by one level.




      Reduce. The target's size is halved in all dimensions, and its weight is reduced to one-eighth of normal. This reduction decreases its size by one category - from Medium to Small, for example.




      When a creature's Constitution modifier decreases, its maximum hit points decrease as well.



      Following this logic, does using Reduce on a monster also reduce its maximum hit points?










      share|improve this question















      From the Monster Manual intro, on p. 7, under "Hit Points":




      A monster's size determines the die used to calculate its hit points, as shown in the Hit Dice by Size table.




      Enlarge/Reduce gives an option to reduce the target's creature size by one level.




      Reduce. The target's size is halved in all dimensions, and its weight is reduced to one-eighth of normal. This reduction decreases its size by one category - from Medium to Small, for example.




      When a creature's Constitution modifier decreases, its maximum hit points decrease as well.



      Following this logic, does using Reduce on a monster also reduce its maximum hit points?







      dnd-5e spells creature-size hit-points






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      edited 1 hour ago









      V2Blast

      15.3k235100




      15.3k235100










      asked 4 hours ago









      Vylix

      6,37412289




      6,37412289




















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          No, it won't reduce its max HP.



          This spell details exactly every change effected by the spell. Changing hit points is not listed, so it doesn't happen.



          While creature size is used for initially calculating the max hit points of a new custom monster, no rule states that a creature's hit dice change when a creature changes size during play. The guidelines given in that section have no effect outside of it.






          share|improve this answer


















          • 1




            If there's a spell reduce constitution, it doesnt explicitly reduce max health, but it does, as a consequence of another rule. Is this one of that?
            – Vylix
            3 hours ago






          • 1




            @Vylix: Fwiw, the question you cite deals only with PCs. PCs and monsters/NPCs often operate under different rules. That being said, I'm unsure if that is the case here, but it is worth noting.
            – Rubiksmoose
            3 hours ago







          • 1




            This spell does not reduce constitution, and does not change hit dice. It affects nothing that would impact max HP.
            – Derek Stucki
            3 hours ago






          • 1




            @David_Coffron, effect, as a verb, means to bring about.
            – Derek Stucki
            1 hour ago










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          1 Answer
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          1 Answer
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          active

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          up vote
          8
          down vote













          No, it won't reduce its max HP.



          This spell details exactly every change effected by the spell. Changing hit points is not listed, so it doesn't happen.



          While creature size is used for initially calculating the max hit points of a new custom monster, no rule states that a creature's hit dice change when a creature changes size during play. The guidelines given in that section have no effect outside of it.






          share|improve this answer


















          • 1




            If there's a spell reduce constitution, it doesnt explicitly reduce max health, but it does, as a consequence of another rule. Is this one of that?
            – Vylix
            3 hours ago






          • 1




            @Vylix: Fwiw, the question you cite deals only with PCs. PCs and monsters/NPCs often operate under different rules. That being said, I'm unsure if that is the case here, but it is worth noting.
            – Rubiksmoose
            3 hours ago







          • 1




            This spell does not reduce constitution, and does not change hit dice. It affects nothing that would impact max HP.
            – Derek Stucki
            3 hours ago






          • 1




            @David_Coffron, effect, as a verb, means to bring about.
            – Derek Stucki
            1 hour ago














          up vote
          8
          down vote













          No, it won't reduce its max HP.



          This spell details exactly every change effected by the spell. Changing hit points is not listed, so it doesn't happen.



          While creature size is used for initially calculating the max hit points of a new custom monster, no rule states that a creature's hit dice change when a creature changes size during play. The guidelines given in that section have no effect outside of it.






          share|improve this answer


















          • 1




            If there's a spell reduce constitution, it doesnt explicitly reduce max health, but it does, as a consequence of another rule. Is this one of that?
            – Vylix
            3 hours ago






          • 1




            @Vylix: Fwiw, the question you cite deals only with PCs. PCs and monsters/NPCs often operate under different rules. That being said, I'm unsure if that is the case here, but it is worth noting.
            – Rubiksmoose
            3 hours ago







          • 1




            This spell does not reduce constitution, and does not change hit dice. It affects nothing that would impact max HP.
            – Derek Stucki
            3 hours ago






          • 1




            @David_Coffron, effect, as a verb, means to bring about.
            – Derek Stucki
            1 hour ago












          up vote
          8
          down vote










          up vote
          8
          down vote









          No, it won't reduce its max HP.



          This spell details exactly every change effected by the spell. Changing hit points is not listed, so it doesn't happen.



          While creature size is used for initially calculating the max hit points of a new custom monster, no rule states that a creature's hit dice change when a creature changes size during play. The guidelines given in that section have no effect outside of it.






          share|improve this answer














          No, it won't reduce its max HP.



          This spell details exactly every change effected by the spell. Changing hit points is not listed, so it doesn't happen.



          While creature size is used for initially calculating the max hit points of a new custom monster, no rule states that a creature's hit dice change when a creature changes size during play. The guidelines given in that section have no effect outside of it.







          share|improve this answer














          share|improve this answer



          share|improve this answer








          edited 1 hour ago

























          answered 3 hours ago









          Derek Stucki

          19.8k665104




          19.8k665104







          • 1




            If there's a spell reduce constitution, it doesnt explicitly reduce max health, but it does, as a consequence of another rule. Is this one of that?
            – Vylix
            3 hours ago






          • 1




            @Vylix: Fwiw, the question you cite deals only with PCs. PCs and monsters/NPCs often operate under different rules. That being said, I'm unsure if that is the case here, but it is worth noting.
            – Rubiksmoose
            3 hours ago







          • 1




            This spell does not reduce constitution, and does not change hit dice. It affects nothing that would impact max HP.
            – Derek Stucki
            3 hours ago






          • 1




            @David_Coffron, effect, as a verb, means to bring about.
            – Derek Stucki
            1 hour ago












          • 1




            If there's a spell reduce constitution, it doesnt explicitly reduce max health, but it does, as a consequence of another rule. Is this one of that?
            – Vylix
            3 hours ago






          • 1




            @Vylix: Fwiw, the question you cite deals only with PCs. PCs and monsters/NPCs often operate under different rules. That being said, I'm unsure if that is the case here, but it is worth noting.
            – Rubiksmoose
            3 hours ago







          • 1




            This spell does not reduce constitution, and does not change hit dice. It affects nothing that would impact max HP.
            – Derek Stucki
            3 hours ago






          • 1




            @David_Coffron, effect, as a verb, means to bring about.
            – Derek Stucki
            1 hour ago







          1




          1




          If there's a spell reduce constitution, it doesnt explicitly reduce max health, but it does, as a consequence of another rule. Is this one of that?
          – Vylix
          3 hours ago




          If there's a spell reduce constitution, it doesnt explicitly reduce max health, but it does, as a consequence of another rule. Is this one of that?
          – Vylix
          3 hours ago




          1




          1




          @Vylix: Fwiw, the question you cite deals only with PCs. PCs and monsters/NPCs often operate under different rules. That being said, I'm unsure if that is the case here, but it is worth noting.
          – Rubiksmoose
          3 hours ago





          @Vylix: Fwiw, the question you cite deals only with PCs. PCs and monsters/NPCs often operate under different rules. That being said, I'm unsure if that is the case here, but it is worth noting.
          – Rubiksmoose
          3 hours ago





          1




          1




          This spell does not reduce constitution, and does not change hit dice. It affects nothing that would impact max HP.
          – Derek Stucki
          3 hours ago




          This spell does not reduce constitution, and does not change hit dice. It affects nothing that would impact max HP.
          – Derek Stucki
          3 hours ago




          1




          1




          @David_Coffron, effect, as a verb, means to bring about.
          – Derek Stucki
          1 hour ago




          @David_Coffron, effect, as a verb, means to bring about.
          – Derek Stucki
          1 hour ago

















           

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