74 ^^^ nayad with adds, constantly summons elementals. Stopping the summoning after she is defeated will cause Dutheris, The Dying Dark, an epic x2, to spawn on the bottom floor. If you already killed him, stopping the summoning instead spawns Dutheris, The Dying Dark, an epic x4.
75 ^^^ Nayad with two adds. Constantly summons Power of the Nizari, little adds that do magic damage. A high arcane resist will help you ignore them. Need to defeat K'hazid and K'huthas to be able to reach her.