While I hate to boil down an entire encounter to a single idea, sometimes it simply can't be helped: Baleroc is the healer fight of this tier of raid content. The developers have been throwing one healer fight at us per tier since Wrath began, making Baleroc the latest in a long line of mechanics designed to let healers play outside the box. Chimaeron and Anub'arak made us focus on keeping health pools low but not too low, while Loatheb and Valithria challenged our burst and sustained throughput. General Vezax's awful aura forced us to make every point of mana count, although our love affair with intellect helped us weather that storm.
Baleroc makes us choose between healing the raid and healing the tank. It's one of the age-old questions for healers, but Baleroc has upped the ante with the Vital Spark/Vital Flame mechanic. The choice of healing targets is transformed from a simple problem to a crucial decision, as the wrong move can cause a wipe. Luckily for you, Beacon of Light will help you truly shine on this encounter, allowing holy paladins to dominate the top 40 board on World of Logs.