Not Updated For Current Season
The masteries shown here are not yet updated for the current season, the guide author needs to set up the new masteries. As such, they will be different than the masteries you see in-game.
AS a pantheon this build will destroy all those before you. Use him sparingly at first, then you can become more bold as time goes on even soloing three at a time. Beware, if you are fighting a bunch of tanks you may still be able to kill one easily but two or more (at a time) will be painfull do to your skill recharge time.