Magic - Choose Which Higher Effect?

[tdsharkey]

So I get that a higher casting roll gets you a "better" effect - but sometimes you want to just blow up the one guy and not the two hundred yards around him with [Insert Horrible Spell Here]. Can the casting player choose a lesser effect - or is magic just that unbridled that you get what you get?

[GnomeBoy]

Magic is strange and unpredictable... The phlogiston would seem to have a will of it's own.

Some spells specify that you can choose a lower result -- most do not.

I do houserule that a player can burn Luck to lower a result for a spell that doesn't normally allow taking a lower result, if that's what they want to do.