One nice little consequence of the change to the 'preparation' approach is that,
if the wizard has slots left open and his spell book available, he can manage a sort of
slow spontaneous magic, taking 15 minutes or 'cast' a spell.
How? Well, so long as he has a slot available to take it, a Wizard can prepare a spell into that slot at any point during the day (that's just the PHB's standard rules). Then of course he can also cast it immediately. So, as far as onlookers are concerned, the wizard goes "hang on, I can cast
that spell, but it's going to take me a little while."!
It's no good for combat magic, true, but for all sorts of utility stuff, waiting 15 mins or so is fine. And that's something that wasn't available with the old 'memorization' model. Realising the impact of this model, I know tend to suggest that, wandering town, or at home, Wizards often leave most of their slots open in the mornings. When they need a spell,
then they'll prepare it.
Now you know why, when you employ the services of a Wizard to cast a spell for you, that he always seems to have the right spell available!
No, Psion, you are
not alone in this matter. Go on, folks, learn the rules that are written, not what you imagine they have written!
