Here's an answer from one of them:
"Hmmm, seduction as a special ability...why not?
But Urd always struck me as the one who feels it's her duty to defend the others, and she has a flair for dramatic casting.
Making potions is a talent I guess, and she really seems to have 'transport' down, she can appear almost anywhere
in an instant (behind Skuld,K1 etc.) plus flight with or without a device.
She's proven to have focus (the way she smothered that bomb)
lol, going back to D&D days she certainly has rage/berserk down.
So, I don't know, I'd say Chemistry/Alchemy or some defensive enhancement maybe.
Thinking more about it, Urd's power isn't really seduction, she just IS seductive.
As for Hild....the way she can keep cranking up the power, I'd say boost. Maybe intimidation?
And Hild could use seduction, easily. She offers power at a price.
Oh, Urd can switch from goddess to demonic style, if that is a factor."