1) Do multiple attacks by one character produce penalties that stack?
2) how about multiple characters uing the feat?
I'm fairly certain the answer to #1 is "No", although I'm not sure where the requisite line is. There's a line in the CRB saying that most penalties are untyped and, thus, stack - typed penalties only stack the largest penalty. To my knowledge Riving Strike is untyped.
The second is more nebulous - it isn't technically the same source (different characters) but at the same time it is from the same source (the Riving Strike feat).
Anyone more knowledgeable know how to answer this properly? I'm gonna favorite the post with a link so I can find it later.
I believe the answer is no and no.
Rats. Are we sure?
Bonuses from the same source never stack, and although penalties usually stack and don't have a bonus type listed it would be weird for the general rule of "things from the same source don't stack" to not apply.
So no, I would say the penalties don't stack.
The penalties also probably wouldn't stack from different characters since the source is still the Riving Strike feat, but I could see it going the other way too.
As a GM, I can certainly say my answer would be no and no.
The big problem here in answering with certainty is that the rules for how penalties stack hasn't been as codified as the rules for bonuses because they don't come up as often.
Yes. Sadly, you cannot spam riving strike until the saves are in the negatives.
You will simply have to stack a ton of other penalties. May I suggest a nice intimidate build with cornugon smash and a cruel property weapon? That can lead to a total of -6 to saves after 2 hits.
That's basically what I plan to do with my antipaladin and then use conductive to deliver touch of corruption for curse for another -4 to saves.
Well, it doesn't involve riving strike since he's not an arcane caster.
But cornugon smash + hurtful + cruel + conductive + bestow curse + antipaladins aura of despair = -10 to saves.
In general, you have options for doing a bunch of save destroying stuff, so the inability to get riving twice isn't too bad.
sickened (cruel weapon) + shaken + riving strike = -6 to saves as well as penalties to other things.
Heh, maybe I'll go dazzling display for my hexcrafter magus. Shaken, evil eye, riVing strike. Ridiculous debuffing machine.