For fluff Signature skill Appraise or Spellcraft.

[Feylin]

Ok I'm going to be an aasimir Arcanist who will be very mercantile. She will have a buddy who is the fence a skinwalker (boar) Slayer. I was thinking she take one of either Appraise or Spellcraft and he take Signature Skill either Sense motive or intimatidate. Which would be better for figure out magic items or even a pc crafter mage?

[Lemmy]

Spellcraft.

Appraise is the most useless skill in the game.

[Abrir]

signature skill:sense motive
some magic items are intelligent, and other times you come across really weird things that intelligent, but can't speak for... reasons(undeveloped clone) created by magical means.
sense motive

intimidate: "Surrender or I will burn you to a scrips!"/"Bow'd down to my arcane might!" they surrender? GM laughs, or barbarians is Gods no, I strike the closest one, or even rogue i'm stealing their stuff since the surrender, what no with no distraction, they see to take one of their wallet's, the fight is on.

If this is for society, or a group that likes fights, go for Sense Motive of the two.

Maybe put 1 rank in appraise for the +3, it's randomly called, because no one else has it but rogue/ninja and wizards, and the occasional bard.However w/ int. as main stat, it makes the rank more viable that other classes.

Tip:
Get 3 ranks in acrobatics asap(3rd level) for the AC bonus during fighting defensively, and full defense.