Increasing Nature's wonder damage

I'm extremely lost and I'm trying to get advice before I end up screwing up again. Buying orbs to reset stats and such.
I use Magic device as my main weapon. I'm not trying to go towards extreme damage, because my dancer is more of a support. I just want decent damage. I'm trying to understand how.
So for magic device and normal attack it says Agi. I'm thinking would it have any effect though towards the skill?
If not I honestly was just considering putting in Dex for mp charge. I just don't want lazy damage.

 

The skill itself has a pretty low multiplier but it counts as a physical skill which means it’s affected by ATK/critical damage. Both INT and AGI increase ATK for magic devices ^^ For mine I went AGI>INT and have 2.2k ATK. But the skill only deals around 100-120k damage. So it doesn’t have huge DPS potential especially at higher difficulty bosses, but it’s good to make sure it can do enough damage so it won’t mob lure when fighting mini bosses.

Also just wondering, but why do you want points in DEX for MP charge?

 

Mp charge is the same as finale that have flat cast time(red bar timer) it cannot be reduced by any means. Same goes with pet support skills, hence it is ok to use potum staff(with-9kcspd redux) on a tamer mage since it does not affect the spells/skills used anyway.

 

Advice I got about stats told to go Dex> Vit
So I just thought

 

Thank you for letting me know
I'm extremely embarrassed to not have known that lol.

 

Use oni set u can get 2 attack stat from vit
Negative side u lose -10% stability
But it worth for more damage.

 

Thank you I will