Warlock Attack 3Cloud of Flies
You breathe out a cloud of acidic black flies that streak across the battlefield, swarming your foe and attempting to enter its body.
Encounter Acid, Arcane, Implement
Standard Action Ranged 10
Target: One creature
Attack: Constitution vs. Fortitude
Hit: 2d6 + Constitution modifier acid damage, and the target grants combat advantage until the end of your next turn.
Infernal Pact or Vestige Pact: On a miss, the target grants combat advantage to you until the end of your next turn.
Published in Arcane Power, page(s) 75.