Your dagger pierces more than the target's flesh, opening its aura to your magic.

Encounter   ✦     Arcane, Weapon
Standard Action      Melee weapon

Requirement: You must be wielding a dagger.

Target: One creature

Attack: Charisma vs. AC

Hit: 2[W] + Charisma modifier damage, and the target takes a -2 penalty to all defenses until the end of your next turn.

Published in Dragon Magazine 390.