For the WotR game I'm currently running, I got two PCs that accepted the gift due to them being morally ambiguous. Also based on what happened at the beginning of book 5 Iomedae didn't really need to punish them based on what I read. Even before the gift my three players have just swat teamed steam-rolled every encounter, so my plan is to maybe strip the two of their gift but I'm not sure if all the side effects would trigger and if the spells mentioned of being capable of doing this would require some save from the PCs or a check rolled by me...it's doesn’t say anything so I wanted to make sure.