Description
Allows 17/33/50% of your Mana regeneration to continue while casting.
Position confidence
row: Confirmed (talentsforever.com JSON + foreverchanges.pro tier listing); column & arrow: Reported (explicit only in talentsforever.com data/shaman.json)
Change notes
Rank 1 (17%) read; ranks 2-3 assumed to match talentsforever's estimate for Priest Meditation.