Greater Ventriloquism

Illusion (Glamer, Avoidance) 

This spell mutes the target and obscures its mouth with an illusory mouth that speaks words chosen by the caster. The words spoken bythe illusory mouth are chosen by the caster and can be in any language that the caster knows. The illusory mouth moves in accordance with any words chosen by the caster, but it cannot speak (V) verbal components, use command words, or activate magic items. While subject to this spell, the target is unable to produce audible sounds from its mouth, although it may produce sounds with its hands or other parts of its body. Thus, the target cannot cast spells with (V) verbal components nor speak command words while subject to this spell.