Description: Freya's hard mode has truly been the most challenging encounter in Ulduar thus far! It's a very well tuned fight that requires everyone to think on their feet and not make a single mistake! To me, the difficulty of this encounter is very reminiscent of pre-nerf M'uru.
Hard mode is activated by leaving the three elders in the Conservatory of Life alive, each of them grants two special abilities to Freya, in addition to increasing the HP of the adds and Freya herself. Elder Stonebark grants Freya +50% physical damage as well as the Ground Tremors ability. Elder Ironbranch grants Freya's allies +50% physical damage and the Strengthened Iron Roots ability. Finally, Elder Brightleaf grants Freya's allies +50% magical damage as well as the Unstable Energy ability.