Quote Originally Posted by Satori01 View Post
So brass tacks...how are the maths applied to gameplay?

Mirror Image is the spell you want, when you can't afford to get hit.

The effect will last longer for some then for some others.

Essentially that is what the math boils down to.
Naw, usually Blur or Protection From Evil is the spell you want when you can't afford to get hit. Or Dimension Door, or Expeditious Retreat.

Mirror Image is the spell you cast when you are unarmored (crummy AC) and have more spell slots than HP, and nothing important to be casting this round, and aren't fighting enemies with blindsight, and yet for some reason can't afford to simply leave combat.

Or to put it the other way: in my experience, Mirror Image is the spell you learn (because hey, Quickened Mirror Image with no concentration cost sounds great for a Paladorc! maybe it will help with big tough monsters) and then never wind up actually casting because something else is always better.