Hypersmurf said:It's below the minimum level at which he can cast it!
-Hyp.
pawsplay said:It's below the minimum level at which he can choose to cast it. But I don't see any rule anywhere that says it's below the minimum level at which it can be cast. As noted already, a 5d6 fireball is possible for a wizard but not a sorcerer. Therefore, a caster level of any arbitrarily low level will not cause it to fail.
Hypersmurf said:There isn't a minimum level at which fireball can be cast. But there is a minimum level at which fireball can be cast by a wizard, and if the arbitrarily low caster level is below the minimum level at which he can cast, he can't cast.
-Hyp.
pawsplay said:The rule only states that he cannot choose to cast it below that level. If he chooses to cast it at or above the minimum level, and the effective caster level is modified, he still fulfills the requirement of that clause.
RigaMortus2 said:What if a Wild Mage (w/o PS feat) chooses to cast Magic Missile at caster level 1, but gets a -3 on his caster level roll?
pawsplay said:It looks like you get one missile with a range of 70 feet.
Which brings up your earlier point. What happens to the spell?Hypersmurf said:There isn't a minimum level at which fireball can be cast. But there is a minimum level at which fireball can be cast by a wizard, and if the arbitrarily low caster level is below the minimum level at which he can cast, he can't cast.
RigaMortus2 said:Perhaps I picked a bad example... Same question, except replace Magic Missile with Burning Hands. You deal 1d4 points of fire damage per caster level. Since our (newly modified) caster level is now -2, does this mean we deal -2d4 points of fire damage?
pawsplay said:Approximately. You will end up doing 1 point of damage (the minimum). Generally speaking, damage doesn't scale down until it becomes healing, nor do bonuses become penalty, but certainly, some spells could dwindle down to the level of being ineffectual, which I believe is perfectly in line with wild magic.

(Dungeons & Dragons)
Rulebook featuring "high magic" options, including a host of new spells.