Just a quick one, I have read posts where people are saying Unholy Aura lowers GCD, increases auto attack, or increases movement. It was my understand that it only increased movement of the character, group or raid is this all that it does? Could someone please clarify this for me, I have been unable to actually find anything solid.
There is a difference between Unholy Aura and Unholy Presence,
Unholy Presence: Infuses the death knight with unholy fury, increasing attack speed by 15%, movement speed by 15% and reducing the global cooldown on all abilities by 0.5 sec. Only one Presence may be active at a time. http://www.wowhead.com/?spell=48265
Unholy Aura: All party or raid members within 45 yards of the Death Knight move 15% faster. This effect does not stack with other movement improving effects. http://www.wowhead.com/?spell=50392