Psionic

is an untinkerable mod that is found on the weapons of all dervishes.

The mod changes a melee weapon's penetration to use the attacker's ego modifier instead of strength modifier, and those attacks use modified penetration calculations against the target's mental armor (MA) instead of the target's regular armor (AV). Cleave will inflict psionically cleaved instead of cleaved.

Weapons with this modifier are temporary, and will dissolve from the physical realm after a pre-determined number of uses. When an item with this modification is created, it starts with a random number of swings from 126-500. After attacking with this weapon, regardless of whether the weapon hits or misses, the number of swings remaining will decrease by one.

Once there are no more remaining swings, the item will disappear.