There is definitely a sort of - affordance - inside Keltham's mind - that wasn't there before. Like a door inside himself with a clear plate that is clearly meant to be pushed rather than pulled.
...did the god-of-Keltham, or whatever he managed to touch, just cleric him?
Keltham did manage to pick up, from random library pages, that clerics are supposed to be able to heal without much preparation. That inner metaphorical door - feels like it should, if he opens it like this -