does anybody really know what affects stun rate? seems like all guesses to me [/b]
Blading: AP on the staff determines stun rate.... watch some lighting mage videos you'll see that almost all of them are using str scroll
Spell Casting: Elemental on the Staff for example

I know couple lighting mages on my server and some of them use both, I know someone who uses Lighting Erenion +8 when casting novas and spells then switch to Ellysium( +7 or higher) or Elixier (+8 ) for blading.