Your vision of your foe's corpse forces itself on reality, withering your victim rapidly.

Encounter  
Standard Action      Personal

Effect: Make an attack with one of your 1st-level at-will attack powers that targets only one creature. If that attack hits its target, choose one of the following effects:
    ✦     The attack deals 2d10 extra damage.
    ✦     The target is weakened until the end of your next turn.

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