Mephistopheles
System: Pathfinder | SRD | Alignment: LE
The Crimson Son
Pantheon: Archdevils
Areas of concern: Contracts, devils, secrets
Domains: Evil , Knowledge , Law , Rune
Subdomains: Devil (Evil) , Devil (Law) , Language , Memory , Thought
Favored weapon: Trident
Symbol: Trident and ring
Sacred animal: Mockingbird
Sacred colors: Red, yellow
Obedience
Every day you must lie to someone for your own personal gain (this cannot be the same person more than once a week). Additionally, once per week, you must write down a new secret that you have learned about someone else and burn it as a sacrifice to Mephistopheles. Gain a +4 profane bonus to Diplomacy checks attempted against targets whose attitudes are unfriendly or worse.
Source: Pathfinder #102: Breaking the Bones of Hell pg. 70