Weird/random idea for AST to make one ability actually...have a point:

[AmiableApkallu]

That'd be pretty cool, I imagine they'd make it be 'Metronome' from Pokemon, but for only ally skills if they were to do such a thing, to prevent you from accidentally killing yourself with it (you have to beat a DPS check in a solo instance and you give yourself -10% stats effect, so you enrage and wipe, not good). So you're soloing and you throw out a card and you can get any other job's any other skill. Maybe you get Confiteor, maybe you get Bloodletter, maybe you get Superbolide and almost oneshot yourself.

If this were me, I'd make it so that the skills always span the range of "definitely undesirable" to "most definitely wanted." But I'd calibrate it based on content. So, for example, in solo content, the range would be relatively limited, and heavily biased towards "desirable" skills. At the other end, in a savage or ultimate, you might see everything from "Morbol Bad Breath on the entire party" to "god-run Confiteor/DoubleDown/etc.", with lesser "bad" outcomes being a real possibility.

Leaving things in the hands of "chaotic fate" shouldn't always be a net-positive, but we don't need to make solo and normal-mode content stupidly punishing, either.