Your Frost Shock now also roots the target in ice for 5 sec.
Frozen Power is a shaman talent available at level 30.
Patch changes
Patch 5.0.4 (28 August 2012): Updated; changed from Increases the damage done by your Lightning Bolt, Chain Lightning, Lava Lash, and Shock spells by X% on targets afflicted by your Frostbrand Attack effect, and your Frost Shock has a Y% chance to root the target in ice for 5 sec. when used on targets at or further than 15 yards from you.
Hotfix (2009-04-21): "The damage bonus of the Frozen Power talent should no longer affect boss creatures."