Alright, so seeing as this character only likes to deal damage, then it looks like we'll have to make damaging skills that also heals your party. This can be done easily by first going into common events, make a new one and name it what you are going to name the skill (Mine was Drainga) Now all you have to add is a simple event, which is "Change HP" and you set it to how much you want the skill to heal your party.
Now, go to the skills tab, and make the skill with all the damaging properties you want, then on the common event part, just choose the common event that you made. So when the skill goes off, it will damage the enemy but will heal your whole party. The only thing is the healing won't show up in the battle log.
Now if this character is staying around for awhile, then you'll need to change the common event so that way the healing isn't dead set in stone, as your characters will quickly out grow it and the healer will have trouble keeping up. It's pretty much just simple variable settings and a little math.
In order do the "Spirit Impact" make sure you check this thread as there are some errors in the VX script that will make it so no matter what you set a variable = a characters stat, it will always = 0 or give you an error message
http://rmrk.net/index.php/topic,25243.0.html