Start with Boots of speed and 3 hp pots. on your 1st recall get Hextech Revolver and Ionian Boots of lucidity if you can. You want to change your revolver into will of the ancients when you can and buy Rylai's Crystal Scepter for the slow. Than you want to get a Rabbado's Death cap and a Zhonya's Hourglass. The last item is optional, but DON'T BUY MANA ITEMS

you can get a Force of Nature if you're getting focused by a heavy magic team, or if you want more healing get a Spirit Visage, Abyssal Scepter and Void Staff are also strong items if the enemy team has a lot of magic resist, You can get a Warmog's Armor for the extra 920 HP and you will get + 23 AP from your passive.