Besides point described up there,
Strike Boost will add your total attack, hence can be used to boost your healing power and Invigorate value (and basically all the support staff skill).
I don't know whether it was based on +1000 attack or not just like Moriya stated, but I tried to strike boost my friend and his invig boosted by 2 points with my strike boost. (before and after).
sparky wrote:Is healing power based off mnd only? Does the staff level and enhancements do anything for the heal?
I saw the tip on the loading screen and it kind of confused me.
Healing power based off mnd only? No. They factor in many aspects, though mnd will be used mostly for affinity and attack value for staff.
Does the staff level and enhancement do anything for the heal? Yes. Because level and enhancement adds to more attack, thus the more level and enhancement your staff is, the more valued is your healing.