Synthesist HP Query


Rules Questions

Sovereign Court

Lvl 10 synthesist
77 HP
Eidolon Constitution 21
Temp HP for it 115

does the summoner get a temp boost of 40 hp because of the difference between the summoners con 12 (1) and its new con 21 (5) or is it only the 115 HP boost of the eidolon.

so should the total be 232 or 192??

Scarab Sages

BTW my Con is 12, the eidolon is 21 four points higher then mine.

also want to ask if i get those 40 hp can i use some or all of them to prevent my eidolon from dying?


Yes the summoner woukd gsin 40 hp though the con and hp seem high for a lvl 10 eidolon


The Eidolon Forms have a base Con of 13, if you took Ability Increase (con) at 1st and 6th level, and put one of your two stat increases in Con you still end up with only an 18 Con, how did you get to 21?

Magic Item?

8Hd+40(+5con x 8) means 75hit points on 8d10, that's a little skewed to the right side of probability, but I frequently see house rules in place to avoid lousy hit die rolls, so 75% of max possible isn't way out of whack. As long as the Constitution is kosher, he should be able to get that many hit points.

To your rules questions, my GM ruled since the hitpoint pools were separate in the Synthesist description, the character is neither penalized or rewarded hit-point-wise for the merger with the eidolon. The eidolon's hit points are based on the Con of the eidolon form, the summoner's hit points are based on the Summoner's own Con, and "using" the Constitution of the Eidolon meant that Fort Saves and temporary Modifiers were based off the eidolon's stats, no inherant hit point adjustment was made.

Now, I don't know that this is backed up by RAW, but I had no issue with the ruling (made sense to me)

Scarab Sages

Base 13 + 5th point, and 10th level point = 15.
Large evo gave it a +4, and I have a belt +2 con = 21

Figured since every so often the eidolon gets points to Str and Dex why not put the extra into Con :)


Ahh it looks good then.

To mc templar, it specfacally says the synthesis gets the eidolons physical stats. In theory they are supposed to have the same issues as barbs if rage drops.


I'll need to adjust my character sheet then (at the moment my summoner has a much higher con than the eidolon, so i guess at zero hp, the eidolon drops then I will recover hps from the difference in con?)


Yes, if your Summoner has higher con than your eidolon, then the eidolon going away actually gives you more HP. If your eidolon has more, and you lose the eidolon, you lose HP.

Scarab Sages

MC Templar wrote:
I'll need to adjust my character sheet then (at the moment my summoner has a much higher con than the eidolon, so i guess at zero hp, the eidolon drops then I will recover hps from the difference in con?)

Let your summoner go negative while leaving your eidolon at 1 hp.

When you fall unconsious your eidolon disappears, your hit points go back up and, after being healed, you can resummon your eidolon.

If you allow your eidolon to go to 0, resummoing is not an option.

Scarab Sages

Mike Johnson 320 wrote:

Base 13 + 5th point, and 10th level point = 15.

Large evo gave it a +4, and I have a belt +2 con = 21

Figured since every so often the eidolon gets points to Str and Dex why not put the extra into Con :)

The +2 belt will modify your con both fused and unfused. You will not lose the 10 real hp you gain from that source.

Beware of losing your eidolon while low on hitpoints. It will mean instant death.


Artanthos wrote:
If you allow your eidolon to go to 0, resummoing is not an option.

How do you figure that? Thye eidolon does not die (it is not at negative HP) it is just unsummkoned. I'm pretty sure that summoning it again is an option.


Derwalt wrote:
How do you figure that? Thye eidolon does not die (it is not at negative HP) it is just unsummkoned. I'm pretty sure that summoning it again is an option.
From the SRD wrote:
If the eidolon is sent back to its home plane due to death, it cannot be summoned again until the following day

This is from the middle of the second paragraph under the "Eidolon" class feature.


But if you let it die, then it comes back the next day at half hp. That's free healing, there. You can use your summon monster ability for the rest of the day.

But yeah, if your eidolon has much higher Con than you, and you use most of your hp to keep it alive, then it does, you may suddenly find yourself past negative Con. Dead.

In your case, you'd get hp back when the eidolon goes away.


Zed Corvin wrote:
Derwalt wrote:
How do you figure that? Thye eidolon does not die (it is not at negative HP) it is just unsummkoned. I'm pretty sure that summoning it again is an option.
From the SRD wrote:
If the eidolon is sent back to its home plane due to death, it cannot be summoned again until the following day

This is from the middle of the second paragraph under the "Eidolon" class feature.

That quote would be entirely irrelevant if the synthesist didn't specifically say "The synthesist gains the eidolon’s hit points as temporary hit points. When these hit points reach 0, the eidolon is killed and sent back to its home plane." But it does say that, so it's quite true.

The summon eidolon spell bypasses that restriction, albeit for a limited duration.


Hmm. Bobspn's quote above is mirrored in the pfsrd - but in my copy of UM, this is the quote in it's entirety: "The synthesist gains the eidolon's hit points as temporary hit points. When these hit points reach 0, the eidolon is sent back to its home plane." My UM is a "First printing April 2011", so maybe it's been changed?

And causing the Eidolon to go to 0 hp is not the same as killing it. Therefrom stems my confusion.

...now I'll go check errata and updates...


Ok, I just checked the update from first to second printing - and they did change it. The (synthesist's) Eidolon is now dead at 0 hp. It wasn't like that in the first printing. That's actually a huge nerf to the synthesist, especially in PFS play, as time will often be an issue here. My character now needs more scrolls of Summon Eidolon.

It's a very reasonable nerf though, as it dampens the min-max factor for a multiclass synthesist somewhat. A welcome change in my book.

Sovereign Court

Evan Riggs wrote:

Lvl 10 synthesist

77 HP
Eidolon Constitution 21
Temp HP for it 115

does the summoner get a temp boost of 40 hp because of the difference between the summoners con 12 (1) and its new con 21 (5) or is it only the 115 HP boost of the eidolon.

so should the total be 232 or 192??

so what would the answer be, 232 or 192

Silver Crusade RPG Superstar 2014 Top 16

Evan Riggs wrote:
Evan Riggs wrote:

Lvl 10 synthesist

77 HP
Eidolon Constitution 21
Temp HP for it 115

does the summoner get a temp boost of 40 hp because of the difference between the summoners con 12 (1) and its new con 21 (5) or is it only the 115 HP boost of the eidolon.

so should the total be 232 or 192??

so what would the answer be, 232 or 192

Total of 232. The Summoner and Eidolon both benefit from the Eidolon's high Con score.

Sovereign Court

Ty Cartmanbeck

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