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.
Okay anyone reading this build, you want to harrass the enemy as much as possible as the damage you do with the runes and the noxious blasts damage will force them to use a hp pot or two. Also, attempt to kill blue golem as much as possible so you can constantly spam your poisons at the enemy. REMEMBER use your ultimates in time with your team mates ultimates (Nunu, Katrina) as it will hold them in place for you to successfully OWN :D