I seem to be able to do this with almost any power to various degrees. Including ones I actually have, and ones that are common among humans. Any specifics you had in mind? Really, ANY ability will reroll some chaotic stuff and be a valuable asset simply because it's rare. Even a deliberating curse, if rare and interesting enough, can do things like be useful for research or provide unique perspectives to be studied. So really, the only limit to where a power stops being useful is where it's only useful to someone else controlling you. Hence, why anything properly rationalist that's not going to be largely about breaking the setting must do something like give MANY the ability so the low hanging fruit is already gone, or make it inherently mysterious and unreplicable, or have some deliberate intelligence preventing it from getting well known, or something like that.