Diana's Ability Order (for laning)

If you're laning Diana, level up your spells like this:
Lunar Rush > Crescent Strike >Pale Cascade > Moonfall

Crescent Strike is Diana's bread and butter, putting out huge magic damage,marking each enemy hit, and setting up your combo with Lunar Rush. Level up by 9. Pale Cascade gives you three orbs of energy that smash enemies on contact, and giving you a spell shield once the orbs are destroyed. This spell puts out tremendous magic damage and gives you survivability as well. Level up by 13. Moonfall is her crowd control, however, doesn't need to be leveled quickly. Put one point in at level 3 and max last.