Rune bombs?


Magic Items


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Have I missed something or is it possible, if woefully inefficient, to apply magical runes to Alchemical Bombs (which are explicitly called out as martial weapons in their section).

If nothing else a +2 Corrosive Bottled Lightning might make for some fun loot.


I think nothing prevents it
honestly this is one reason I hope someday there will be a way to apply temporary free boosts.. sorta like that p1 magus sorta ability.
it'd be fun haha if inefficient. but all that style


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Also horribly inefficient:
It looks like you can righteous ally a bomb for a literal holy hand grenade.


You can make magic ammunition so I don't see why not. Since ammo comes in groups of 10, I would assume you could apply a property rune to 10 bombs for the same price as 1 permanent weapon.


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Fuzzypaws wrote:
You can make magic ammunition so I don't see why not. Since ammo comes in groups of 10, I would assume you could apply a property rune to 10 bombs for the same price as 1 permanent weapon.

I think this would be great if it got called out as a rule.


It would be extremely amusing at least.

huh. i did not realize ammo comes in groups of 10 now for enchantment. I missed that bit. good to know as i'm building a athrower


Unfortunately, doubling rings won't work : "Consequently, the benefit doesn’t apply to thrown attacks"


Zwordsman wrote:

It would be extremely amusing at least.

huh. i did not realize ammo comes in groups of 10 now for enchantment. I missed that bit. good to know as i'm building a athrower

Note that I don't think by default bombs are ammo. They are consumable thrown martial weapons with the bomb subtype.

As an aside, if it did end up being the case that you could batch enchant bombs, I think a shifting rune could be a good idea -a polybomb could help offset the need of the alchemist to improvise.


Trouble is, runes can only be placed on items of expert of higher quality. And I don't think there are any rules for making expert quality alchemist items. They don't fall on the table under weapons or armor and there are no expert of higher quality alchemical items in the magic item section, unlike the expet + quality gear we have examples for.


Elleth wrote:
Zwordsman wrote:

It would be extremely amusing at least.

huh. i did not realize ammo comes in groups of 10 now for enchantment. I missed that bit. good to know as i'm building a athrower

Note that I don't think by default bombs are ammo. They are consumable thrown martial weapons with the bomb subtype.

As an aside, if it did end up being the case that you could batch enchant bombs, I think a shifting rune could be a good idea -a polybomb could help offset the need of the alchemist to improvise.

Yeah. They're not. I was mostly thinking about my character who will, at some point, switch from Darts to Shuriken.. because the 0 reload thing.

but also realized. unlike P1. Shuriken aren't called out as ammo in this one. (nor are darts. but was never really clear in p1 either)


Joey Cote wrote:

Trouble is, runes can only be placed on items of expert of higher quality. And I don't think there are any rules for making expert quality alchemist items. They don't fall on the table under weapons or armor and there are no expert of higher quality alchemical items in the magic item section, unlike the expet + quality gear we have examples for.

in the equipment section it is mentioned that there are expert/master/etc items of other items, that just don't offer "mechanical" bonuses.

like, a legendary box. it would be much prettier than a regular one, but they both would fit the same bulk and do the same things.

similary, you could make an "expert" vial for your bombs, but it wouldn't have any mechanical impact (aside from elevated cost)

still think that enchanting bombs is nowhere near RAI but still...


shroudb wrote:
Joey Cote wrote:

Trouble is, runes can only be placed on items of expert of higher quality. And I don't think there are any rules for making expert quality alchemist items. They don't fall on the table under weapons or armor and there are no expert of higher quality alchemical items in the magic item section, unlike the expet + quality gear we have examples for.

in the equipment section it is mentioned that there are expert/master/etc items of other items, that just don't offer "mechanical" bonuses.

like, a legendary box. it would be much prettier than a regular one, but they both would fit the same bulk and do the same things.

similary, you could make an "expert" vial for your bombs, but it wouldn't have any mechanical impact (aside from elevated cost)

still think that enchanting bombs is nowhere near RAI but still...

A good point. Although it would seem pretty doubtful that something like a bomb which has direct combat effect wouldn't have a "mechanical" bonus.


It'd be a lot simpler if higher damage bombs were simply higher level items. And alchemists could have a class feature to add some select extra effects on them. Or better yet, a feat, so people can play bomb-less alchemist if they want to.


Ediwir wrote:
It'd be a lot simpler if higher damage bombs were simply higher level items. And alchemists could have a class feature to add some select extra effects on them. Or better yet, a feat, so people can play bomb-less alchemist if they want to.

Interessting. There are people that want the additional dice damage progression be baked into level advancement to not be so dependent on magic items.

And here, where bomb damage progression is baked into advancement, you want it to be an item property. :)
Both variants are valid. I find it strange that PF2 has both versions in place to begin with.


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Question: Is it RAW to use a potency crystal (or oil of potency) with an Alchemist bomb? 2 gp for double damage and +1 to hit should be well worth it at higher levels... Bonus question: How would this stack with Empower Bombs?


pad300 wrote:
Question: Is it RAW to use a potency crystal (or oil of potency) with an Alchemist bomb? 2 gp for double damage and +1 to hit should be well worth it at higher levels... Bonus question: How would this stack with Empower Bombs?

It's not clear, that's what we're discussing.

There are no "expert" bombs in the crb, so you cannot apply runes
They are martial thrown weapons, so you could apply runes

But they are also not "ammunition" so I don't know where you came 2gp per rune, it would be full price by RAW per bomb.

Runes would directly add dices equal to their + regardless of the extra damage from alchemist features that would get added afterwards.


shroudb wrote:
pad300 wrote:
Question: Is it RAW to use a potency crystal (or oil of potency) with an Alchemist bomb? 2 gp for double damage and +1 to hit should be well worth it at higher levels... Bonus question: How would this stack with Empower Bombs?

It's not clear, that's what we're discussing.

There are no "expert" bombs in the crb, so you cannot apply runes
They are martial thrown weapons, so you could apply runes

But they are also not "ammunition" so I don't know where you came 2gp per rune, it would be full price by RAW per bomb.

Runes would directly add dices equal to their + regardless of the extra damage from alchemist features that would get added afterwards.

Try to follow along: Oil of Potency (5gp) & Potency Crystal (2gp) are not runes, they are consumables that temporarily give a weapon a +1 potency. There is no text specifying that they need to be on a expert or better weapon. They would effectively be 1 shots as the "weapon" they are on will be destroyed...


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pad300 wrote:
Question: Is it RAW to use a potency crystal (or oil of potency) with an Alchemist bomb? 2 gp for double damage and +1 to hit should be well worth it at higher levels... Bonus question: How would this stack with Empower Bombs?

Looks like it to me. Bombs are non-magical weapons, which is the only qualification that those items have. I'd say that the extra damage die stacks on top of the ones provided by Empower Bombs, because they are still non-magical. The +1 to hit wouldn't stack with the bonuses to hit for higher levels of Empower Bombs, but would apply at lower levels when Empower Bombs doesn't give a bonus to hit. So at 11th level for example you'd get a +1 to hit and do 5 times the base damage die (4x for Empower Bombs and 1 for potency). At 15th it'd do 6 times the base die and still get a +1 to hit because the +1 from Empower Bombs at that level and the +1 from the potency are both item bonuses and therefore don't stack.

Potency Crystal is of course the better option here, it's less than half the price of the oil and is intended as a one-shot item anyway, while the oil lasts a minute and is intended for multi-use weapons. Although both require resonance. Unless there was an option that one bottle of the oil could apply to multiple bombs, but as written that doesn't seem to be the case.


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There should be something like handwraps of mighty fists for thrown weapons. Enchant/rune the "gloves of mighty tossing" and the benefit is given to weapons thrown with it. Sure there are loopholes here but the idea is worth considering I think.


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Per the OP's question

- We know that expert/master/legendary weapons can be made. (Pg 190)
- We know that bombs count as weapons weapons. (Pg 359)
- Therefore expert/master/legendary bombs can be made (And they would add item bonuses to hit)

- When crafting consumables you can make a batch of 4 (Pg 148)
- You etch runes with the same process as the craft activity. (Pg 370)
- Therefore you can etch a single rune onto the 4 bombs you made in a batch. (and would need all of them to transfer it off later if you so choose)

- You can do all this for the low cost of 1 RP per 1/2 batch with the Advanced Alchemy feature. (Pg 45)
- I don't think you can do this with the quick alchemy action though as that only allows alchemical items. (Pg 46, and errata)

If I have misquoted or misinterpreted any rules please let me know.


Doktor Weasel wrote:
pad300 wrote:
Question: Is it RAW to use a potency crystal (or oil of potency) with an Alchemist bomb? 2 gp for double damage and +1 to hit should be well worth it at higher levels... Bonus question: How would this stack with Empower Bombs?

Looks like it to me. Bombs are non-magical weapons, which is the only qualification that those items have. I'd say that the extra damage die stacks on top of the ones provided by Empower Bombs, because they are still non-magical. The +1 to hit wouldn't stack with the bonuses to hit for higher levels of Empower Bombs, but would apply at lower levels when Empower Bombs doesn't give a bonus to hit. So at 11th level for example you'd get a +1 to hit and do 5 times the base damage die (4x for Empower Bombs and 1 for potency). At 15th it'd do 6 times the base die and still get a +1 to hit because the +1 from Empower Bombs at that level and the +1 from the potency are both item bonuses and therefore don't stack.

Potency Crystal is of course the better option here, it's less than half the price of the oil and is intended as a one-shot item anyway, while the oil lasts a minute and is intended for multi-use weapons. Although both require resonance. Unless there was an option that one bottle of the oil could apply to multiple bombs, but as written that doesn't seem to be the case.

Following on from the interesting points brought up by people here. Potency crystal seems to work. In the case of a wizard multiclass, magic weapon spell (or true strike if you want to be less of a time-waster) + magical striker sound like they would also work. So it should be possible to increase an alchemical bomb to a +3 potency weapon. So potentially 9 times the damage dice, 6 times the persistent damage, and splash damage of up to 2+int mod thanks to alchemist feats.


Elleth wrote:
Doktor Weasel wrote:
pad300 wrote:
Question: Is it RAW to use a potency crystal (or oil of potency) with an Alchemist bomb? 2 gp for double damage and +1 to hit should be well worth it at higher levels... Bonus question: How would this stack with Empower Bombs?

Looks like it to me. Bombs are non-magical weapons, which is the only qualification that those items have. I'd say that the extra damage die stacks on top of the ones provided by Empower Bombs, because they are still non-magical. The +1 to hit wouldn't stack with the bonuses to hit for higher levels of Empower Bombs, but would apply at lower levels when Empower Bombs doesn't give a bonus to hit. So at 11th level for example you'd get a +1 to hit and do 5 times the base damage die (4x for Empower Bombs and 1 for potency). At 15th it'd do 6 times the base die and still get a +1 to hit because the +1 from Empower Bombs at that level and the +1 from the potency are both item bonuses and therefore don't stack.

Potency Crystal is of course the better option here, it's less than half the price of the oil and is intended as a one-shot item anyway, while the oil lasts a minute and is intended for multi-use weapons. Although both require resonance. Unless there was an option that one bottle of the oil could apply to multiple bombs, but as written that doesn't seem to be the case.

Following on from the interesting points brought up by people here. Potency crystal seems to work. In the case of a wizard multiclass, magic weapon spell (or true strike if you want to be less of a time-waster) + magical striker sound like they would also work. So it should be possible to increase an alchemical bomb to a +3 potency weapon. So potentially 9 times the damage dice, 6 times the persistent damage, and splash damage of up to 2+int mod thanks to alchemist feats.

Not sure how you are getting a + 3? Potency Crystal & Magic Weapon spell don't stack - the are item bonuses.


pad300 wrote:
Elleth wrote:
Doktor Weasel wrote:
pad300 wrote:
Question: Is it RAW to use a potency crystal (or oil of potency) with an Alchemist bomb? 2 gp for double damage and +1 to hit should be well worth it at higher levels... Bonus question: How would this stack with Empower Bombs?

Looks like it to me. Bombs are non-magical weapons, which is the only qualification that those items have. I'd say that the extra damage die stacks on top of the ones provided by Empower Bombs, because they are still non-magical. The +1 to hit wouldn't stack with the bonuses to hit for higher levels of Empower Bombs, but would apply at lower levels when Empower Bombs doesn't give a bonus to hit. So at 11th level for example you'd get a +1 to hit and do 5 times the base damage die (4x for Empower Bombs and 1 for potency). At 15th it'd do 6 times the base die and still get a +1 to hit because the +1 from Empower Bombs at that level and the +1 from the potency are both item bonuses and therefore don't stack.

Potency Crystal is of course the better option here, it's less than half the price of the oil and is intended as a one-shot item anyway, while the oil lasts a minute and is intended for multi-use weapons. Although both require resonance. Unless there was an option that one bottle of the oil could apply to multiple bombs, but as written that doesn't seem to be the case.

Following on from the interesting points brought up by people here. Potency crystal seems to work. In the case of a wizard multiclass, magic weapon spell (or true strike if you want to be less of a time-waster) + magical striker sound like they would also work. So it should be possible to increase an alchemical bomb to a +3 potency weapon. So potentially 9 times the damage dice, 6 times the persistent damage, and splash damage of up to 2+int mod thanks to alchemist feats.
Not sure how you are getting a + 3? Potency Crystal & Magic Weapon spell don't stack - the are item bonuses.

My bad, poor phrasing. The item bonuses don't stack, but the dice stack as in a +3 potency weapon. Should have clarified what I meant.


Elleth wrote:
pad300 wrote:
Elleth wrote:
Doktor Weasel wrote:
pad300 wrote:
Question: Is it RAW to use a potency crystal (or oil of potency) with an Alchemist bomb? 2 gp for double damage and +1 to hit should be well worth it at higher levels... Bonus question: How would this stack with Empower Bombs?

Looks like it to me. Bombs are non-magical weapons, which is the only qualification that those items have. I'd say that the extra damage die stacks on top of the ones provided by Empower Bombs, because they are still non-magical. The +1 to hit wouldn't stack with the bonuses to hit for higher levels of Empower Bombs, but would apply at lower levels when Empower Bombs doesn't give a bonus to hit. So at 11th level for example you'd get a +1 to hit and do 5 times the base damage die (4x for Empower Bombs and 1 for potency). At 15th it'd do 6 times the base die and still get a +1 to hit because the +1 from Empower Bombs at that level and the +1 from the potency are both item bonuses and therefore don't stack.

Potency Crystal is of course the better option here, it's less than half the price of the oil and is intended as a one-shot item anyway, while the oil lasts a minute and is intended for multi-use weapons. Although both require resonance. Unless there was an option that one bottle of the oil could apply to multiple bombs, but as written that doesn't seem to be the case.

Following on from the interesting points brought up by people here. Potency crystal seems to work. In the case of a wizard multiclass, magic weapon spell (or true strike if you want to be less of a time-waster) + magical striker sound like they would also work. So it should be possible to increase an alchemical bomb to a +3 potency weapon. So potentially 9 times the damage dice, 6 times the persistent damage, and splash damage of up to 2+int mod thanks to alchemist feats.
Not sure how you are getting a + 3? Potency Crystal & Magic Weapon spell don't stack - the are item bonuses.
My bad, poor...

potency crystal requires nonmagical weapon.

when you cast magic weapon on it, it's temporary a "+1 magic weapon", so you can't use it in conjunction to that.

(and vice versa)

you're stuck at using either one or the other.


Whoops. I misread the crystal as increment by one, sorry about that. Thanks for the catch.


You'd have to affix your Potency Crystals to your Bombs (infused or otherwise) in advance using the Repair Action (taking 1 Hour each). So it won't work with Quick-Alchemy-Made Bombs... and they still cost RP to activate so it isn't very cost effective anyway.


McLeaderPants wrote:

Per the OP's question

- We know that expert/master/legendary weapons can be made. (Pg 190)
- We know that bombs count as weapons weapons. (Pg 359)
- Therefore expert/master/legendary bombs can be made (And they would add item bonuses to hit)

- When crafting consumables you can make a batch of 4 (Pg 148)
- You etch runes with the same process as the craft activity. (Pg 370)
- Therefore you can etch a single rune onto the 4 bombs you made in a batch. (and would need all of them to transfer it off later if you so choose)

- You can do all this for the low cost of 1 RP per 1/2 batch with the Advanced Alchemy feature. (Pg 45)
- I don't think you can do this with the quick alchemy action though as that only allows alchemical items. (Pg 46, and errata)

If I have misquoted or misinterpreted any rules please let me know.

Making a batch doesn't change the price of the items (or their runes), and they aren't ammunition either (as that would be a Trait); so each +1 Bomb costs the same amount as a +1 Longsword... but is still Consumable (unlike the Longsword) Further, while you can in theory create superior quality Bombs using Advanced/Quick Alchemy, you cannot use those features to create the Rune itself (because it is not an alchemical item, so even if the Alchemist did have Magical Crafting, Advanced Alchemy's benefit doesn't apply.


The advanced alchemy feat allows you to not pay the costs, doesn't it? (On phone so I don't have access to the PDF.)


Also I need to read better when I'm out. Not only did @Cantriped make good points, my response was covered in his post as well. Of course I can no longer edit my post to avoid double posting.

I apologize to everyone else for miss-reading the rules and trying to spread my miss-information. :-)

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