I gotta be thinking about how much time each spell takes to cast, how long it lasts, what the other guys are doing with their own shit. I mean, when it comes down to it that's pretty basic math, but you know. [Does he. Does anyone.] Then there's area of effect for most spells, something like thunderwave hits a fifteen foot cube surrounding me, so being able to roughly figure out where everyone's standing in relation to myself is real helpful, especially since I can't shape my spells to avoid hitting the idiots I like.

[Lup can, but that doesn't help him much.]

I guess you could make an argument for probability, since that does factor into some spells, but unless you're a fucking genius it's not all that helpful when you're facing off against three ogres and you got five seconds to cast something before they punch you so hard you die.