Charming

Negotiator (PH) , CHA 13,

Benefit: When you make a Charisma check to exert control over the target of a mind-affecting spell you cast, you gain a +3 bonus on this roll. This applies to checks to convince the target of a spell from the charm person spell chain to take an action it normally wouldn't, as well as to opposed Charisma checks made by two casters whose spells affect the same target and who give it conflicting orders.

Benefit: When you make a Charisma check to exert control over the target of a mind-affecting spell you cast, you gain a +3 bonus on this roll. This applies to checks to convince the target of a spell from the charm person spell chain to take an action it normally wouldn’t, as well as to opposed Charisma checks made by two casters whose spells affect the same target and who give it conflicting orders.

You are particularly convincing when attempting to command targets of your mind-affecting spells