Adding it to
Empowered Touch should have a side benefit of making mastery suck less, too. Only problem now is the mana cost (more than healing touch...).
I'm wondering what in the heck they're planning to do with the glyph. Straight mana cost reduction is a snooze, proc'ing a wild growth is OP, maybe it'll allow the regrowth hot to jump to another 1-2 targets? What else could they do with it?