Tomas's blue eyes became very wide, as he watched the man across from him change. He could change what things looked like himself - even people if he did it right! - but it required time and effort and some kind of medium and... this kind of effortless use of power just wasn't something he had ever seen before!
He moved closer, reached out and hesitantly tried to put a hand against Minato's face, to see if it had physically changed or not. The younger version that he was seeing now was slightly rounder of cheek, and if he could just touch... maybe he'd know.