Something's Rotten in Faerun
Potion of Ventriloquism
This allows the user to make his voice sound as if it (or someone’s voice or a similar sound) were issuing from someplace other than where he is—from another creature, a statue, from behind a door, down a passage, etc. The user can speak in any language he knows, or make any sound he can normally make. To detect the ruse, listeners must roll a successful saving throw vs. spell with a penalty of -2. If cast in conjunction with other illusions, the DM may rule greater penalties or disallow an independent saving throw against this effect—the combined illusion may be perfect! The imbiber can use the ventriloquism ability up to six times within the duration of the potion.