Hemorrhage

Hemorrhage is a talented ability for Subtlety Rogues that is an instant strike, dealing 110% weapon damage (160% if a dagger is equipped) as well as leaving a debuff that increases damage taken from Bleed effects.

Talent improvement

 * Deadly Momentum will give your next Hemorrhage a 40% increased chance to crit after killing an opponent that yields honor or experience. The improved crit chance lasts for 15 seconds.
 * Lethality increases the critical strike damage bonus of your Hemorrhage by 10/20/30%.
 * Sinister Calling increases the percentage damage bonus of Hemorrhage by an additional 40%.

Item improvement

 * The 4 piece bonus of the Bonescythe Armor Set gives you 5 Energy for every one of your Hemorrhage critical hits.
 * The 6 piece bonus of the Bonescythe Armor Set reduces the threat generated from your Hemorrhage by 8%.
 * The 4 piece bonus of the Slayer's Armor Set increases the damage done by Hemorrhage by 6%.
 * Glyph of Hemorrhage

Damage calculation formula
The basic formula for calculating hemorrhage damage is: Lethality = (0.06 * Lethality Rank) Sinister Calling = (0.01 * Sinister Calling Rank) Damage Factor = 1.10 * (1 + Sinister Calling) Critical Factor = 2 + Lethality Normalization factor = 2.4 for swords, 1.7 for daggers Normal Hemorrhage Damage = [(Attack Power/14 * Normalization factor) + Weapon Damage]*Damage Factor Critical Hemorrhage Damage = Normal Hemorrhage Damage * Critical Factor

Note that the bonus from Sinister Calling is additive!

Thinking of speccing Hemorrhage?

 * Hemorrhage does not stack with Garrote nor Rupture as it is not a bleed effect; the additional damage is not applied to the damage ticks of either ability.
 * Seal Fate is wasted on a hemorrhage build, as +9% agility and a full +10% attack power is better, until a 30% or higher crit rate is achieved. If you play PvP consider that the average arena opponent will have around ~400 resilience, so ~10% critical hit chance reduction; you will need around 40% or higher crit rate to efficiently use Seal Fate with hemo. On pre-TBC this options was viable since resilience was not present in the game and was easy to reach 30% crit chance, but even then it was a poor choice in comparison to the standard hemo build as Seal Fate only performed well with daggers with Imp BS and Imp Ambush.
 * If you plan to use Hemorrhage always look for the weapon that has the highest average damage that you can obtain. If you are making a choice, choose the weapon with the best average damage.