Sense Motive Skill

General Skills Rules:

• Taking 10: If you are not threatened or distracted you can take 10 on a roll.
• Taking 20: when you have plenty of time, 2 minutes or more and faced with no threats or distractions, you can take 20. This does not count as a ‘natural 20’ and indicate automatic success. Generally this takes 20 times longer than normal. You can’t take 20 on any check that has consequences for failure.
• “1” Rolls: When you roll a natural 1 on a skill check, roll D20 again. SUBTRACT this number from your check.
• “20” Rolls: When you roll a natural 20 on a skill check, roll D20 again. Add this number plus the 20 to your check.

Sense Motive (WIS) Retries: None Requires: usually a free action or in response to another’s actions. 

• Trying to read a social situation requires at least a minute.
• Avoid being Bluffed: determine something is up or assess someone’s trustworthiness- opposed roll- bluff vs sense motive.
• Study Social Situation: given at least a minute in a given social situation you can determine basic information: who favors who and who dislikes who. Given an hour or more in a social situation you can gain an in depth understanding of the situation.

Synergy: +2 on diplomacy checks if you have 5 or more ranks of sense motive.
Action and DC: 

• Realize something is wrong- Imposter DC: 20 
• Realize someone is untrustworthy 20
• Someone under influence of enchantment DC: 25 
• Someone has been dominated DC: 15
• Discern Secret Message Vs bluff 
• Study Social Situation DC: 20