Racial Mental Aptitude

 Illithid have an afinity to mental spells including impressive immunity to most
 mental manipulation.
 
 Illithid's mental aptitude allows them to deal more damage with mental-type
 spells. However, where Illithid are strong with mental-type spells, they are
 not very apt with kinetic spells.
 
 Upon delivering a terminal kill to an enemy, an Illithid absorbs the life
 essence of the fallen and adds it to their own.
 
 Note: This racial ability is innate and does not require any specific action to
 initiate. It operates naturally, like breathing.