Does anyone know the different levels of regeneration for each level of this? I'm wondering if it's worth increasing, just for the mana. I always seem to run out of mana, health isn't too much of a problem.

If it's something like +3 for each rank, I'd so max it. It would end all pack needs forever. All I know is the first rank is +3.

EDIT: Also, does anyone know how much dodge blur adds? And does the duration increase with rank?