Warlock Utility 10Ambassador Imp
You conjure forth an implike presence from the netherworld and give it a message to deliver to a far-off creature.
Daily Arcane, Conjuration
Standard Action Ranged 100 miles
Effect: You whisper a message into the air, and an implike presence appears next to the creature you wish to speak to and delivers your message. If the creature has a reply, the imp appears adjacent to you at the end of your next turn to utter it. If the creature has no reply or is not within range, the imp appears adjacent to you at the end of your next turn to tell you so. The imp then disappears.
Published in Player's Handbook, page(s) 136, Class Compendium.