What is your Geass power? Here are the requirements (yes, there are requirements) From what I've noticed, the Geass always pertains to people's brain, or their senses, its never physical. (*Minor spoilers for R2* lelouch's geass affects the persons brain, Mao's obviously reads peoples "minds", Rolo stops people's "sense" of time, and the Emperor erases memories) Also, the Geass pertains to either your goals or personality, or maybe both.

What is mine? Well, I have the ability to read any given atmosphere no matter what the circumstances as well as reading a person and finding out if they have any alterer motives for their actions. I can also tell if someone is a truly a good person or if their sole is as black as ink.