So I have a witch and a mesmerist in my upcoming game, and the witch really wants to take evil eye, but the mesmerist hypnotic stare ability says that the penalties from the stare don't stack with a witch's evil eye. So does that mean that if the mesmerist stares at a creature and gives them the -2 to Will saves, and a witch gives the same creature a -2 to AC with evil eye, only the mesmerist one applies, or does the term stacking only refer to an instance where the penalty is to the same type or roll, like if the witch used evil eye against the creatures saving throws?
