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.
Well, first of all...try to get the last hit on minions with your lay waste to get faster gold, and get a mana potion if you want, just stay behind the minions and try to get 580 gold to get tears of goddness ( why? ) Well, to get more mana, so you can stay much more time without having to go back to the base when u run out of mana, and more damage later when you get archangel staff.
After getting the tears, its the same strategy, keep using lay waste to increase your mana, and get more money to buy catalyses, after that go for rod of ages ( why? ) well, each minute increases Hp/mana/AP so later game, you ll have a good amouth of hp/mana to survive byurself + AP bonus. Its a good ideia also to try to get some kills, to get more money at the beginning, with heal, if it is 1x1 you can active your defile + spamming lay waste to kill your enemy (Yea, ull be tanking him, but if he have stun, or taunt...well...gl lol) if he trys to runaway just use flash, or if you have requiem just use it. And during all the game keep you eyes on the enemys HP to use requiem to kill them when you have a chanse. Well back on the build, after rod of ages, go for the boots of speed, just to get more speed, after that go for the archangel staff ( remmember the tear of goddness + rod of ages mana bonuses? yea, will be really helpfull right now, because of the max mana AP 2.5% damage, after archangel staff go for your Sorcerer's Shoes. Tip: if you re getting a good amount of kills, go for the Mejai's Soulstealer before the boots, if you want to, or after, your choice. When you have all these stuff, go for Zhonya's Ring if ur patient you can get 2 rings, so you ll have a great amount of AP. Or if your looking for more hp ( by now you ll have like 2.3k HP / 3.5k mana / buy 1 Rylais crystal scepter, so you ll have around 2.8k hp.