tone down the semblance slightly as at first you state almost undetectable and then you states he's unable to be seen or herd so either have a time limit or something similar or just go with something like invisibility via bending light around him, also how many are you up for our chars hunting down the White Fang? mind you i'll try to keep away from adam for obvious reason such as the guy's semblance is X_X not to mention he's crazy agile in his fighting