Rpgmaker battle system

[DarkLordYoda]

Im having some trouble creating some custimized content and I was wondering if anyone could help.

Flurry and Power Attack-

I was hoping to make the first ability have the character atack twice with any weapon he has equipped and the second make the character to attack with his equipped weapon an cause more damage.

LIghtside /Darkside

I was hoping to create a system were darkside powers cost more for a lightside character to use and vice versa, I already have the darkside lightside variables set up, I just need to incorporate that with the battle system. I know the long way of creating an event for every monster group and every ability, but I was hoping there was an easier way.