Level 70 Protection Warrior Solo: Gnarlroot (Normal Difficulty)

This one was TOUGH! I had to go for maximum DPS while maintaining enough survivability to deal with the lasher adds. There's no hard enrage that I can see, BUT if you're soloing and can't kill him before the fifth set of roots goes out, you're toast. The roots span the entire width of the arena, so you can't get around them to burn them away and you're essentially trapped until you die from the pulsing AoE.
ilvl 522, using Elementium Pocket Anvil (ilvl 522) and Cataclysmic Signet Brand (ilvl 528) trinkets.

[@DurendilLeHunt]

I also was surprised at the damage from the lashers when I first started on this boss.