Oh no! Elden really likes nugs so if they ever met, Elden would probably learn about this the hard way by trying to show him one. After that, he’ll have his back and help keep the nugs away though! Sorry Krane!
Most of Elden’s fears revolve around himself and his perceived shortcomings so it’s mostly stuff like worrying he won’t be enough/will let people down or will be left behind etc. However, when he was little, he was afraid of the dark. His parents, being the stellar people that they are, thought the best way to get him over it was to force him into it. They didn’t lock him in a cabinet or anything thankfully, but once it was time for bed, they took the whole “lights out” thing seriously. They’d close all the curtains and take away all the candles. His twin didn’t really get what his problem was but their older sister would sneak in with candles. When she discovered her magic (before their parents found out about it and sent her to the Circle of course) she would mess around with it and light up his room that way. Once she was gone he sort of forced himself to not be afraid anymore. I mean, it isn’t that easy of course, but eventually he got used to it.