Vampirism is a powerskill which transforms all of the player's entire current health and a portion of their missing health into recovery. This functions as a risk/reward system of regaining health if it is already low.
Turns all of the player's health and 50%-100% of their missing health into recovery, which will give the player back some health for dealing damage if they are quick enough.
If the player deals no damage during the rally effect, they will be left at 1 hp.
This skill is very dangerous to use and has a high risk/reward factor. While the recovery can heal significantly, it is generally recommended to use this skill only in situations where you are in close proximity to an enemy and can make use of the additional recovery.
The Recovery mutation helps rectify this, giving the player more time to hit enemies and recover HP.
Prior to v1.9, Vampirism was an area of effect skill that made enemies bleed and drop healing items. It was rendered unusable when the player activates it, and could be recharged if they drank a flask.
The skill was also recharged when entering the safe passage between biomes, but not when exiting them.
Enemies would drop the healing item even if they stopped bleeding but weren't killed.