Adjatha the Drinker

Adjatha the Drinker is an enchanted long sword +2. This weapon offers a bonus to speed factor, thaco and damage of +2 and on top of that, it can absorb 1 hitpoint every time it hits an opponent, similair to the Sword of Chaos and it makes the wielder immune to charm and domination status effects. This item appears Baldur's Gate II: Shadows of Amn. It can be found on the another planar prison during the subquest: Rescue Raelis Shai and Haer'Dalis from the Planar Prison. The Warden will drop this blade.

In-game description
"This blade belonged to Dabbar, a long dead servant of Bhaal that exercised control over his minions in the most brutal of ways. In addition to strengthening the mind against the guile of others, the sword absorbs life energy from an opponent with each successful hit, healing the user. Dabbar considered it a failure of his officers if he returned from battle in less than perfect health, and as the rest of the company watched, he would administer beatings until fully healed."