A
Soulknife is a
psionic prestige class in
Dungeons & Dragons Third Edition. The main feature of the Soulknife is the ability to create a
short sword out of psionic energy (think
Psylocke of
X-Men fame), and use this weapon, with more an more powerful uses as they grow in level.
A particular heinous FCP of the Soulknife is at second level, when they can imbed a psionic power of 3rd level or greater in their blade. When they next strike, the power is discharged into the recipient, with no saving throw allowed. Any number of third level powers, when thrown with no saving throw, are particularly unbalancing (think of the effect of Time Hop or even Daze in a battle).