Every week, WoW Insider brings you The Light and How to Swing It for holy, protection and retribution paladins. Every Sunday, Chase Christian invites you to discuss the finer side of the paladin class: the holy specialization. Feel free to email me with any questions you want answered!
DPS classes love fights that are simple enough that they can focus on running their rotation optimally. It lets them stretch their legs and see how much damage they're truly capable of. Patchwerk is always the golden example of this style. Rogues, mages, and the rest didn't have anything to worry about except their own personal DPS. Fight mechanics only get in the way of a damage dealer doing his job. Every patch of fire or Whirlwind only serves to make him perform suboptimally.
Healer-oriented encounters are the complete opposite. Instead of business as usual, healers are challenged to break out of their comfort zone and do things they've never done before. Casting DPS spells at Loatheb while his terrible aura persisted. Watching health bars glitter in the red as Leeching Swarm turned our own heals against us. Gathering orbs midair as we tried to save a dying dragon with our amazing throughput. Now, in Blackwing Descent, we are faced with yet another terrible foe: Chimaeron mixes elements from all of these fights to give us a truly unique healing experience.