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.
The magic pan. runes will help you more that ap or somthing eles becuse you need magic pen. aginste all champions
The mana regen seals help you to stay longer on the lane (mid) you need i't to farm creep and if you want to dmg your enemy you need more mana regen
The cooldown reduction will help you to get your void and with you void you a realy fast in farming ;)
The quintessence runes a ap you need a little ap boost at beggin but not like Vaigar or someone like that
I use the utility build for my build it is nice becuse you become cd. reduction, speed, recharge time, mana regen, and meg. pen. All what you need
The Zhonya's hourglass is the best item for begin. becuse you need it in team fights and solo fights. You need the ap and armor to playing aginste Mf, twich, xin .....