Heinz,
A rules interpretation on the mindblade. If I change its length to longsword and dismiss it, when I call it up later is it short sword or longsword length? There are advantages both ways. Retaining longsword length means it comes up doing more damage immediately. If it resets to short sword then that is something that can be done if I'm grappled (dismiss then free action summon) to make it a light weapon I can attack with from within a grapple so still get a full attack off immediately instead of spending a full round to change it to a light weapon I can attack with.
Shape Mind Blade (Su): At 5th level, a soulknife gains the ability to change the form of his mind blade. As a fullround action, he can change his mind blade to replicate a longsword (damage 1d8 for a Medium weapon wielded as a one-handed weapon) or a bastard sword (damage 1d10 for a Medium weapon, but he must wield it as a two-handed weapon unless he knows the Exotic Weapon Proficiency (bastard sword) feat). If a soulknife shapes his mind blade into the form of a bastard sword and wields it two-handed, he adds 1-1/2 times his Strength bonus to his damage rolls, just like when using any other two-handed weapon.
Alternatively, a soulknife can split his mind blade into two identical short swords, suitable for fighting with a weapon in each hand. (The normal penalties for fighting with two weapons apply.) However, both mind blades have an enhancement bonus 1 lower than the soulknife would otherwise create with a single mind blade.
Mind Blade (Su): As a move action, a soulknife can create a semisolid blade composed of psychic energy distilled from his own mind. The blade is identical in all ways (except visually) to a short sword of a size appropriate for its wielder. For instance, a Medium soulknife materializes a Medium mind blade that he can wield as a light weapon, and the blade deals 1d6 points of damage (crit 19–20/x2). Soulknives who are smaller or larger than Medium create mind blades identical to short swords appropriate for their size, with a corresponding change to the blade’s damage. The wielder of a mind blade gains the usual benefits to his attack roll and damage roll from a high Strength bonus.
The blade can be broken (it has hardness 10 and 10 hit points); however, a soulknife can simply create another on his next move action. The moment he relinquishes his grip on his blade, it dissipates (unless he intends to throw it; see below). A mind blade is considered a magic weapon for the purpose of overcoming damage reduction.
A soulknife can use feats such as Power Attack or Combat Expertise in conjunction with the mind blade just as if it were a normal weapon. He can also choose mind blade for feats requiring a specific weapon choice, such as Weapon Specialization. Powers or spells that upgrade weapons can be used on a mind blade.
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 on attack rolls and damage rolls (+2 at 8th level, +3 at 12th level, +4 at 16th level, and +5 at 20th level).
Even in places where psionic effects do not normally function (such as within a null psionics field), a soulknife can attempt to sustain his mind blade by making a DC 20 Will save. On a successful save, the soulknife maintains his mind blade for a number of rounds equal to his class level before he needs to check again. On an unsuccessful attempt, the mind blade vanishes. As a move action on his turn, the soulknife can attempt a new Will save to rematerialize his mind blade while he remains within the psionics negating effect.