Whoa, okay. Don't worry guys, I know you have nothing against me as a person. I tend to play my characters both online and offline very realistically. If it would be logical for my character to act in a certain way, then they will, even if it's to the detriment of himself or the party.
For the record though, his magic is just another form of spellcasting. It's functionally identical to other forms of spell casting save that psychic spells never have verbal or somatic components. Psychic spell casters replace those components with thought and emotion components respectively. Their magic is derived from their mind, body, spirit and even their cosmic self.
Also, in order to use his duelist powers he would have to sacrifice an unused spell to create a manifestation to directly attack the commanders mind. He could resist as if it was any normal attack, obviously though, Micah would only use it if he had to what with the significant cost. Duels are tricky bitches so I think for a forum rp they should be avoided