Mind Empowerment

 
Prerequisite(s): Soulknife, Mindblade class feature, Psychic Strike class feature, Mind Cleave
 
Benefit: If you deal enough damage to a creature to make it fall (typically by dropping it below 0 hps or killing it), with your mindblade, you capture a larger portion of the creature's liberated energy of consciousness (more than you do with mind cleave). The liberated energy automatically charges the blade used to fell the foe as if you had imbued it with your psychic strike class feature, this charge lasts for 3 rounds or until you make your next successful psychic strike, whereupon you deal an additional 1d8 damage..
 
Source: Complete Psionic