Eldritch bolt
warlock attack 1
Special: Eldritch bolt can be used as a ranged basic attack.
Target: one creature
Attack: Charisma vs. Reflex
Hit: "1d10 + Charisma modifier force damage."
Level 21: "2d10 + Charisma modifier force damage."[HoS:66]
Eldritch bolt is an at-will power available to warlocks at 1st level. It is granted automatically to hexblades.