Kassadin Build Guide by
Not Updated For Current Season
Most people choose boots 2 or catalyst before the blasting want, but that extra early game AP combined with surge is enough to essentially ensure a lvl 6-8 kill on mid. Just poke until they are at 1/3 health, then Surge, R, Q, W, E, R. Dead every time. Build your ROA and Rabadon's then move on to Lich Bane. Once you get that you should melt squishies like butter. Q, R, Auto-attack, W, E, Auto Attack, R, Auto-attack can do thousands of damage.
Standard AP Caster masteries, 21-0-9, I spec into the Movement speed b/c of the late boots 2.