The vampire appeared, and Whisper stepped forward and with a surprisingly quick lunge, stabbed her with that ludicrously ordinary dagger she was holding.
Except, the sharp eye would see that in mid-thrust, the blade of it changed. The edges lit up with light that wasn't light; that cast no shadows and didn't hurt the eyes. It seemed to compress...becoming as thin and flat as a drawing of a dagger blade. And finally it changed to a dull, featureless grey that burned and twisted in the mind just to look at.
From its effect on the undead, it didn't feel any better to have it shoved into one.
The payload delivered, Whisper stepped back and peered curiously down at the vampire to gauge its reaction to her attack.
[roll0] to hit, and [roll1] damage (counts as magic due to Psionic Weapon focus), plus [roll2] psychic damage from Lethal Strike with 5 points on it.