Mindblade

A soulknife can create a semisolid blade composed of psychic energy distilled from his own mind. The blade is identical in all ways to a short sword. A mind blade is considered a magic weapon (+1) for the purpose of overcoming damage reduction.
A soulknife's mind blade improves as the character gains higher levels. At 4th level and every four levels thereafter, the mind blade gains a cumulative +1 enhancement bonus to attack rolls and damage rolls.
Implementation Note: For the purposes of interaction with Iaijutsu Master class, a mindblade in bastard sword form is considered equivalent to a katana. This is due to the fact that in PnP, katana = masterwork bastard sword.