my new senticar spec.
Did you give up on Warden? Or is this an alternate spec?
I still love my Warden, but For both Hylas and Galenir it was better for me to play Senticar. They're good at what they do, and the guild only had one other senticar besides me.
In both Hylas and Galenir there is some heavy aoe damage, particularly Hylas. He has a move called soul fracture that does about 4k damage to the entire raid and then puts an uncleansable dot on them that ticks for maybe about 1k more each tick. He does this every 30 seconds, so you need strong AoE healing to get through this fight.
I did the testing, and Loyalty (justicar's 10 man heal) heals almost exactly the same as Healing Communion with mien of honor (the Sentinel's 10 man heal), but it is instant cast so it not only produces better aoe HPS than Healing Communion (which takes 2 seconds to casT) but is also easier to time so that you bring people up right after the first 4k hit. It also happens to be more mana efficient than healing communion.
The problem with Warden in this fight is that even though Wardens are quite good at aoe healing, they just don't bring what you need. Many of your abilities--cataract, healing flood, ripple, orbs of the tide-- cover 5 mans and not 10 man. Healing showers is too weak and on too long of a cooldown to be useful. Downpour is actually quite good (especially when used with tides), but the 1 min cd means you can only use it every other fracture. I thought about having 2 wardens alternate, but even then you're only each covering 10 raid members.
The other aspect of the fight with Hylas is that aside from the aoe damage, there isn't much healing to be done. Senticar brings the burst aoe healing you need for fractures, but inbetween it can do dps (terrible dps, but better than warden) and contributes a lot to utility by bring two rezzes.