Healer, 2P -- After using Power Infusion or Lightwell, the mana cost of your healing spells is reduced by 25% for [10|15] sec. (10 sec for Discipline, 15 for non--Discipline.)
Healer, 4P -- Your Power Word: Shield has a 10% chance to absorb 100% additional damage, and the cooldown of your Holy Word abilities is reduced by 20%.
Absolutely shit
Shadow is pretty epic though
Shadow, 2P -- Shadow Word: Death deals an additional 55% damage, and you no longer take damage from your own Shadow Word: Death when the target fails to die.
Shadow, 4P -- Your Shadowfiend and Shadowy Apparitions have a 100% chance to grant you 3 Shadow Orbs each time they deal damage.