Alhoon

Alhoon: These undead mind flayers are a rising power in the twisted politics of the Underdark.

Special abilities
An alhoon has damage reduction 15/+1 as well as 100% cold and electrical immunity. This creature also has most of the usual undead immunities, specifically to critical hits, disease, level drain, ability drain, mind-affecting spells, paralysis, poison, and sneak attacks. However, an alhoon does not have the usual undead immunity to death magic. (Probably a bug.) In addition, an alhoon has spell resistance 24 and +4 turn resistance.

The attacks of an alhoon penetrate damage reduction as a +8 weapon. In addition, this creature has use of an aura of fear once per day, psionic charm monster and psionic inertial barrier each twice per day, psionic mass concussion four times per day, and psionic mind blast and psionic mind blast 10m radius each eight times per day.

An alhoon has some special attacks that are used against non-polymorphed members of playable races who become disabled. If the target is paralyzed or stunned, an alhoon will perform an extract brain attack. If the target is dazed, an alhoon will perform an extract brain attack 9% of the time, a psionic mind blast that does not count against the daily limit 21% of the time, and use normal attacks the remaining 70% of the time. In addition, these special attacks are used against creatures whose subrace is "Tiefling" (presumably to handle Valen Shadowbreath in the Hordes of the Underdark campaign). Tieflings are subject to the extract brain attack (if not polymorphed) when paralyzed or stunned, and 30% of the time when dazed; otherwise a tiefling is treated to the special mind blast.

An alhoon is a level 8 sorcerer with the following spells known.