I've seen videos and read many posts from people who have solo'd Sarth 3D on 10 man, but I am having a rough time with it.
I'm using Flask of Winter's Bite, Potion of Mogu Power, and Black Pepper Ribs and Shrimp, along with BoM. I'm also making sure SS and Inquisition is up, and using all my cooldowns (both offensive and defensive). I can only get in one Execution Sentence. On my last attempt I was at about 43k dps.
I can get him to about 10%, and that's it. It's so frustrating to get that close! Sarth himself isn't bad, it's Tenebron that is killing me. His melee is hitting for 50k, and his shadow breath for close to 70k.
My ilvl is a bit low (455), I wondering if that's the issue? I'm also way under hit cap, but I wasn't finding too many misses either.
Any advice or suggestions would be great!