The power set I really want to work with is two-fold. 

The first level would be that, once the character makes eye contact with a person, they are able to take complete control over that person's sensory perception, being able to amplify, reduce, or even outright shut them down. Not just the traditional senses either, also the more complex senses like balance, kinesthetics and even their sense of time. 

The second level would involve prolonged eye contact, inducing a trance on the target to control them.