I removed Tempered Will because I had to remove something

. I was thinking of removing Cover but that
feels more like a distinct PLD skill to me.
Just to clarify, you're proposing flash be targeted like stoneskin (i.e. cast on self or others,) the target receives a buff that increases damage against enemies with a special debuff, the enemies get the special debuff by being in range of the target when the ability is used?
It's an interesting idea definitely. Not sure if flash should so heavily changed instead of making it a new ability though.