I'm pretty sure I remember E-Sumi-Yan telling my Conjurer that Hearing wasn't something that could be taught. You either had the gift or you didn't.
The thing is, that Hearer at Quarrymill who was saying that the elementals had rejected the Ala Mhigans makes it sound as if the elementals approve everyone who wants to live in the Shroud. Maybe since the Calamity things like the Ixal have got in because the elementals are weak, but the Keepers predate the Calamity so unless the Hearer is lying then they must have been accepted at some point. And if the Hearer is lying then she really should have been busted by now because she's lying about stuff that anyone can ask around about and get a different answer on.
The thing is, that Hearer at Quarrymill who was saying that the elementals had rejected the Ala Mhigans makes it sound as if the elementals approve everyone who wants to live in the Shroud. Maybe since the Calamity things like the Ixal have got in because the elementals are weak, but the Keepers predate the Calamity so unless the Hearer is lying then they must have been accepted at some point. And if the Hearer is lying then she really should have been busted by now because she's lying about stuff that anyone can ask around about and get a different answer on.