Curse Of Gluttony

This is the ability to steal the powers and stats of people/creatures by consuming their souls. But in exchange for this, the user suffers from an uncontrollable hunger and the only way to ease the pain is to have a constant supply of souls to feed it
Once the Curse Of Gluttony Knows the taste of Souls, there is no turning back. The more you eat, the stronger you'll get so you can consume more. And the more you eat, the more you'll want to eat.

The Curse Of Gluttony has a backlash for its user. If the user defeats a powerful creature, such as a Unique Monster or a stronger enemy, a consequence more severe than Starvation Mode is triggered. This effect plunges the user into a frenzy, filled with a maddening urge to kill. The user must withstand this urge as long as possible. Once the effect subsides, it leaves the user in a state of profound fatigue

Starvation Mode: A side effect of the Curse Of Gluttony that affects the user, it changes the visual of the eyes of the user into red, This method means the Curse Of Gluttony isn't satisfied with the souls that the user consumed. If the user activates the starvation mode it changes both eyes of the user to red and will activate the starvation boost. [Need to reword later]
Starvation Boost: As a side effect of the Curse Of Gluttony it craves souls. It provides a boost to basic statuses. The ability to detect "prey" through smell, as well as the activation of night vision through the reddened eye. The Red eyes also have an effect of paralyzing those who are inferior in power from Fear. The starvation Boost is a temporary power that raises the efficiency of the Curse Of Gluttony's Abilities to devour souls.