Enhanced Inner Rage

Enhanced Inner Rage is a Warrior spell obtainable in Aquatic Temple, Enchanted Forest, Gilded Skies, Northern Lands and Volcanic Chambers on Nightmare difficulty.

Enhanced Inner Rage grants a 4.5 second movement speed buff whilst also granting a 90% increase in ability damage.
From Volcanic Chambers to Gilded skies on NIGHTMARE, but it must be your highest nightmare dungeon, a level 165 cannot get EIR/EIF from Volcanic Chambers Nightmare, and a 175 cannot get it from Aquatic Temple Nightmare