Asmodean Advocate

For the faithful of Asmodeus, the words used in a negotiation or contract matter more than their intent.
  The word of the law is to be respected, but loopholes and vague wording are part of every law. Asmodean advocates are master wordsmiths who ally themselves with creatures that—much like their words—seem insignificant but are treacherous. Pact-Bound (Ex)
  An Asmodean advocate must choose Asmodeus as their deity and select the Trickery domain. They do not gain a second domain. If they ever change their deity, they lose this archetype and become a normal ex-cleric.
  This ability alters domains.
 

Serpent (Su)

At 1st level, an Asmodean advocate gains a familiar as the arcane bond class feature, using their cleric level as their wizard level. They must choose a viper familiar. The viper speaks one language of the Asmodean advocate’s choice as a supernatural ability.
 

Devil in the Details (Ex)

At 1st level, an Asmodean advocate learns to choose their words so carefully that even when they say something designed to deceive listeners, the words are phrased to be technically true. They can use their Profession (barrister) skill for Bluff and Diplomacy checks. This benefit also extends to their familiar. The Asmodean advocate gains an Insight Bonus equal to 1/2 their cleric level (minimum +1) on Linguistics checks related to forgeries and on all Profession (barrister) checks.
 

Shoulder Devil (Su)

At 8th level, an Asmodean advocate can choose an imp familiar as though they had the Improved Familiar feat.