This guys real easy. Kinda cool to fight too. But him and Sundersky are soloable IF your higher end. I did it for some guildees tonight. Kencho 80 Monk 7th hammer
We two-grouped Oroshar and his forms on CT the other day. We didn't have a tank so a 70 berserker tanked it, he dropped down on the 2nd form and a 70 rogue took over and tanked the rest without issue. If you have someone kill the adds as they spawn they aren't really an issue. Just be on your toes and you'll be fine :)
Last night... Was in a group of guildies on the Nameless... Myself, Barupe, 70 Warrior, just under 12k hps, 1950 AC, and 2 levels from Max Mitigation, Max Avoidance...249 AA Etc. 70 Necro, Lloathing, 410 AA... 68 Cleric, Ninanyene, 141 AA... 66 Shaman, Fawnica, 66 AA... Botted by the Nec...
We were killing the Fire Camp looking for BP/Legs marks, when we got a visitor. 8^)
It took us approximately 11 minutes to kill all three spawns. He dropped the mageblade. The next named we killed had a Mark of Battle<BP quest item>. Hope this info helps you all.
This is first in a series of 3 mobs that rise from each prior mobs ashes. When you kill skysmoke (below lvl 70, easily groupable) then Oroshar the Ashcaster spawns. Oroshar spawns some low HP adds. Spawns appear to be time based since I was trying to med while he was hitting me but adds kept popping out even though I hadnt dotted Oroshar yet. I've seen a 3rd mob spawn also from 2nd, but forgot name. Didn't get to 3rd mob myself since I had too many adds on me. First 2 mobs dont have loot. If drops are in line with rest of named in arcstone, it would probably be a 100 hp item.
Coalshade, Oroshar's Wake is the third mob. Non-aggro, drops from Oroshar's loot table best I could tell (minus the Mark, of course). Was just like fighting Skysmoke again.