As a newcomer I had loads of questions and uncertainties pertaining to the security of my account and to the payment. He displayed patience and friendliness.
As for the boosting itself, I spectated most of the games and I am sure that the other testimonies will carry more weight as this was s1 -> g5 boosting but he rocked the games single handedly from a 16/1/6 akali pentakill to a 14/3/12 xerath quadrakill to a 17/2/8 lucian!
