which skill for my full int s/s nuker?

[thelilbum]

im going full int s/s nuker and im thinking which element masteries should i get i know im geting lighting and wat should my 2nd masterie be?

[ShadowReaver]

i go for 80 bicheon/80 lightning(speed/extra magic dmg)/80 fire(best imbue, magic defense, the awesome anti-wizard fire-wall)/60 cold(some phy.defense)
and i wear protector armor, and not garment, cause i'm not 80 cold so i need some extra phy.defense.