I've recently picked up a bog-standard lvl 58 third age songbook for the minstrel I've been playing for the past month or so, only it isn't bog-standard. I managed to pick an additional 2 major legacies whilst leveling up, both high tier. it has some very useful healing legacies, but the problem I've got is that, the higher in level I go, the songbook's i'll pick up will have a higher tactical healing rating.
I've already had to put my 65 SA songbook (from the Enedwaith epic) on the back-burner, so my simple question is; what exactly is the tactical healing rating? Is it a multiplier, a bonus? Or something else entirely? Thanks