Nature's Focus

From wow.incgamers.com

Talent: Nature's Focus
Effect: Gives you a % chance to avoid interruption caused by damage while casting the Healing Touch, Regrowth and Tranquility spells.
Statistics: Rank 1 = 14%, Rank 2 = 28%, Rank 3 = 42%, Rank 4 = 56%, Rank 5 = 70%.