Illusions and the ability to influence people- sometimes, Irene thinks Ilde could be terrifying (brilliant). She's never jealous, not with the reports of violence against xenians, not with the Militia, not with what Ilde herself has told her about being xenian in Baedal- though it's not just that, it's the knowledge that she gets by with perfectly human powers.

Ilde, though--

"Should we let me discuss the ethics of that, really?" she asks. (Joke about how bad you are and people forget how bad you are). "It's funny, though- people are influenced by music when it's played well, even when the musician in question doesn't have any particular powers."