I've been using the Language ability with bonus dice from the appropriate persuasion or deception specialty.
The roll is against the opponents intrigue defense (situational modifiers may apply). Depending upon the nature of the goal, it may require multiple degrees of success. A critical failure may make future intrigues more difficult or worsen the situation.
It has worked very well and it has caused some characters to increase their Language above 3 which they would not think of doing before






