My party faces an encounter with a Gibbering Mouther. It has the following power:
Gibbering (auditory, aura, emotion, enchantment, incapacitation, mental, occult) Each creature that begins its turn within 60 feet of a gibbering mouther must attempt a DC 19 Will save. On a failure, they are confused for 1 round. On a success, they are temporarily immune for 1 minute. (Taken from the Bestiary, PF2e)
They each Succeed on the save and become immune for 1 minute.
A second Gibbering Mouther appears in the room in the 2nd round of the encounter, the first Gibbering Mouther is still alive.
Question: Are the Pcs immune to the Gibbering of the second creature as well since they passed the save against the first creature or they have to save again???