Simmering Frenzy

Simmering Frenzy is a World skill, found in the Vampire Skill line.

Simmering Frenzy
658/2s Instant Cast Target: Self Base Skill: Blood Frenzy
CRIMINAL ACT Allow your monstrous appetites to take hold, increasing your Weapon and Spell Damage by 80 every 2 seconds, up to 5 times. While toggled on, the Health cost of this ability increases by 360 per stack and you cannot be healed by anyone other than yourself.

Simmering Frenzy is a morph of the Blood Frenzy base skill. The other morph is Sated Fury.