I'm trying to create a homebrew spell that adds multipliers to the number rolled. An example would be the Life Transference spell which reads as follows:
You sacrifice some of your health to mend another creature’s injuries. You take 4d8 necrotic damage, and one creature of your choice that you can see within range regains a number of hit points equal to twice the necrotic damage you take.
At higher level: When you cast this spell using a spell slot of 4th level or higher, the damage increases by 1d8 for each slot level above 3rd.
I would like to have the homebrew spell cause a similar affect where the target regains a number of hit points equal to twice the necrotic damage you take + the casters spellcasting modifier. How do you input simple math like multipliers or division to a rolled value?
Are you asking how to have it work within the online dice roller? If so, I'm not sure if that is possible currently. The dice roller is very limited in what it is able to do with official content, much less with specific homebrew things. Also, to the best of my knowledge even using the online dice roller doesn't automatically adjust information on the character sheet like HP, so the multiplication is still manual on the player's end.
If not, then you can just make a note of that multiplier within the description of the spell and allow the players who use it to do the math on their own.
Nothing rolled on the caster’s character sheet could in any way affect another creature directly. The amount rolled is to determine how much necrotic damage the caster takes. (Even that is not registered automatically on the character sheet and must be manually entered by the player.) If you change the spell to add the caster’s Spellcasting Ability modifier, then that would add to the amount of damage it shows the caster would take, which it doesn’t sound like is what you want.
To amend the spell to express the increased number of HP the recipient would gain, you would just amend the text of the spel’s description to read as “regains a number of hit points equal to twice the necrotic damage you take, plus your spellcasting Ability modifier.”
Are you asking how to have it work within the online dice roller? If so, I'm not sure if that is possible currently. The dice roller is very limited in what it is able to do with official content, much less with specific homebrew things. Also, to the best of my knowledge even using the online dice roller doesn't automatically adjust information on the character sheet like HP, so the multiplication is still manual on the player's end.
If not, then you can just make a note of that multiplier within the description of the spell and allow the players who use it to do the math on their own.
It seems like you are right, ConalTheGreat. While the dice roller has features to add the spellcaster's modifier or a set static value to a roll there are no features to do any other simple math from the rolled values. When I created a copy of Life Transference and looked at the underlying modifiers for the doubling of the rolled values everything was set as flavor text in the description and the player is forced to remember and calculate themselves.
It seems like it would be a very simple addition to have the roller apply simple math as a modifier when trying to do something along the lines of:
TLDR: It appears everyone is in consensus that the onus is on the player to read flavor text for additional value modifiers and do all of the math themselves... eh well. Would be a good feature to implement in the future.
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I'm trying to create a homebrew spell that adds multipliers to the number rolled. An example would be the Life Transference spell which reads as follows:
I would like to have the homebrew spell cause a similar affect where the target regains a number of hit points equal to twice the necrotic damage you take + the casters spellcasting modifier. How do you input simple math like multipliers or division to a rolled value?
Are you asking how to have it work within the online dice roller? If so, I'm not sure if that is possible currently. The dice roller is very limited in what it is able to do with official content, much less with specific homebrew things. Also, to the best of my knowledge even using the online dice roller doesn't automatically adjust information on the character sheet like HP, so the multiplication is still manual on the player's end.
If not, then you can just make a note of that multiplier within the description of the spell and allow the players who use it to do the math on their own.
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Nothing rolled on the caster’s character sheet could in any way affect another creature directly. The amount rolled is to determine how much necrotic damage the caster takes. (Even that is not registered automatically on the character sheet and must be manually entered by the player.) If you change the spell to add the caster’s Spellcasting Ability modifier, then that would add to the amount of damage it shows the caster would take, which it doesn’t sound like is what you want.
To amend the spell to express the increased number of HP the recipient would gain, you would just amend the text of the spel’s description to read as “regains a number of hit points equal to twice the necrotic damage you take, plus your spellcasting Ability modifier.”
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It seems like you are right, ConalTheGreat. While the dice roller has features to add the spellcaster's modifier or a set static value to a roll there are no features to do any other simple math from the rolled values. When I created a copy of Life Transference and looked at the underlying modifiers for the doubling of the rolled values everything was set as flavor text in the description and the player is forced to remember and calculate themselves.
It seems like it would be a very simple addition to have the roller apply simple math as a modifier when trying to do something along the lines of:
((1d8 rolled value) * 2) + spellcasting ability modifier
It already does some of these things.
TLDR: It appears everyone is in consensus that the onus is on the player to read flavor text for additional value modifiers and do all of the math themselves... eh well. Would be a good feature to implement in the future.