blackmage

[ChickensEvil]

What is the best way to raise this stat?

That should be the exact same value as Intelligence. Same with Healing Magic Potency = Mind. Attack Power = Strength. Why they list this twice I have no clue. But basically Strength affects your auto-attack damage (why you would be EVER doing this I don't know... but it is technically there). Mind affects any healing spells you have, given we have access to Physic this will tell you how good your heal will be(given our low mind stat and it not being on gear... or at least shouldn't be... this is also practically pointless, since you likely will never cast a heal, unless maybe you are soloing something.)

I don't know what the formula is, but basically is it some combination of Intelligence * Weapon Damage * Skill Potency = How hard your ability hits. I believe some people have either worked out the formulas or at least attempted to, so go look for them if you are interested, but bottom line the more intelligence you have the more damage you will do.

[Tassidaru]

That should be the exact same value as Intelligence. Same with Healing Magic Potency = Mind. Attack Power = Strength. Why they list this twice I have no clue. But basically Strength affects your auto-attack damage (why you would be EVER doing this I don't know... but it is technically there). Mind affects any healing spells you have, given we have access to Physic this will tell you how good your heal will be(given our low mind stat and it not being on gear... or at least shouldn't be... this is also practically pointless, since you likely will never cast a heal, unless maybe you are soloing something.)

I wouldn't be surprised if down the road SE introduces a secondary stat like MAB (Magic Attack Bonus for peeps who didn't play FFXI) so then Magic Attack Potency will be some combination, since DET seems to be about as useful as SATA for RNG/COR
*edit: Then again, Comparing XI to XIV mechanics/formulas, XIV is really, really less complex