You show your foe its own death, while forcing new vulnerabilities upon it.

Daily   ✦     Psychic
Standard Action      Personal

Effect: Make an attack with one of your 1st-level at-will attack powers that targets only one creature. That attack deals 3d10 extra psychic damage. If your attack misses, the target takes half damage. Regardless of whether the attack hits, the target gains vulnerable 10 to all damage (save ends).

Published in Dragon Magazine 387, page(s) 56.