Kensai Pyrokineticist

[Brains]

The Pyrokineticist's Fire Lash ability:

A pyrokineticist gains the ability to fashion a 15-foot-long whip of fire from unstable ectoplasm as a move-equivalent action. She takes no damage from a fire lash she creates, and if she releases her hold, it immediately dissipates. The lash deals 1d8 points of fire damage to a target within 15 feet on a successful ranged touch attack. A pyro can take Weapon Focus and Weapon Specialization (if she otherwise meets the prerequisites) in conjunction with the fire lash, as well as any feats that apply to the use of a standard whip. The whip remains in existence as long as the pyrokineticist holds it.

So a Pyrokineticist can take Weapon Focus (Fire Lash), and the only requirement for a Kensai's signature weapon is that he has Weapon Focus for it. Can a pyrokineticist/kensai therefor choose Fire Lash for his signature weapon? Is this a way in which Fire Lash can be enhanced and imbued?

[linklord231]

Perhaps, but it looks like you'd have to hold on to the Fire Lash forever.  It dissipates once you let go, and I don't see any reason to believe that you're summoning the same Fire Lash each time you use your ability. 

[Brains]

Perhaps, but it looks like you'd have to hold on to the Fire Lash forever.  It dissipates once you let go, and I don't see any reason to believe that you're summoning the same Fire Lash each time you use your ability.

That's definitely one way to look at it. It could be treated like a natural weapon too, though it's impossible to know.

[phaedrusxy]

Perhaps, but it looks like you'd have to hold on to the Fire Lash forever.  It dissipates once you let go, and I don't see any reason to believe that you're summoning the same Fire Lash each time you use your ability.

I also don't see anything saying you're not. It would come down to a DM's call, and I'd personally allow it. There is precedent from things like the Soul Knife, etc.