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Spiteful glamor
warlock (dark) attack 1

Target: one creature

Attack: Charisma vs. Will

Hit: "1d8 + Charisma modifier psychic damage, or 1d12 + Charisma modifier psychic damage to a target at maximum hit points.
"Increase damage to 2d8 + Charisma modifier at 21st level, or 2d12 + Charisma modifier to a target at maximum hit points."[FRPG:35]

Spiteful glamor is an at-will power available to warlocks at 1st level. It is granted automatically to warlocks who choose the dark pact option for their Eldritch Pact.