Hi all! Relatively new (or new to PF2e) GM here. Last night one of my players who is playing a Summoner raised the question of whether he can attempt Treat Wounds twice every hour instead of once since his Eidolon is a separate target (ie. Someone treats the Summoner's wounds and then immediately treats the Eidolon's wounds). I ruled in the moment that I didn't think that sounded right, my reasoning being that they share a health pool and the PC shouldn't be able to double its benefits solely because of which class it is. Can anyone tell me what the RAW is here, ideally with an AON reference I can point him to?
Edit: I found this thread which seems to suggest that I made the wrong call. I'd love to have a more official answer, but I think the idea that healing is supposed to be trivialized by certain combos makes sense.
If the summoner and eidolon both took damage from an AoE, would you only apply it once since they share hit points?
Yes, those are the rules.
If both are affected by the exact same effect, then yeah, it only applies once.
The Treat Wounds effect is different since it's not the exact same effect, they're still separate entities and it's not applied simultaneously. hence the question. General consensus seems to be that you can, just not simultaneous (i.e. ward medic)
I believe the RAW in that case is for the Summoner to only take the greater of the damage it would take and what its eidolon would take. So if the Summoner succeeds the saving throw and the Eidolon crit fails the save, then the summoner takes double damage from the AOE effect.