This is the reward for the level 20 Epic quest step. Easy quest, even at level 20, and a nice reward, as good bracers are hard to come by. Only decent one I've found is Bracer of Malevolence (I think that's it) from Nisse's lair, like 2 piety 1 strength.
And remember, bonuses to abilities won't go above your cap (which for us healers is our level). So you won't get any bonus Pacification if you have it maxed for your level.