Blindside (old rogue talent)

Blindside is a very efficient Assassination rogue attack, available at level 40. The tradeoff for this efficiency is that it can only be used when the target is at low health, or when randomly triggered by Mutilate. When an enemy's health is approaching the 35% threshold, rogues may wish to pool energy, since it would be better spent on efficient uses of Blindside below 35% rather than other less efficient abilities above the threshold.