Inner Fire Ablaze  

Firelords are DEEEEEEEP in the lower levels - near where the Warlock spawns and I think PH's are protectors around there! Look for the long tunnel corridor between 2 bits of suspended walkway - not far before the one-way drop down to get to Naggy! There should be a few Firelords round there.

It is in glassroom
Quest require u to kill 20 of firelords of Thyr