Elder-Basilisk said:
Actually it's not so much of a bad idea as an inevitable consequence of the way the D&D magic system works.
Let's say an enchanter went out of his way to mitigate his vulnerabilities by adding a few spells that work on mindless and undead critters. So at 1st level, he has magic missile, at 2nd level, he has Blindness/Deafness, at 4th level he has Otiluke's Resilient Sphere, and at 5th level, he has Summon Monster V.
That seems pretty decent - but did he only prepare
one non-mind-affecting offense spell for each spell level? It seems like he prepared two or more mind-affecting spells for each spell level - putting all the eggs into one basket, so to speak.
Now, when he's a first level character with spell focus: enchantment and improved initiative, odds are his spell selection looks like this:
Lvl 0: Daze Person x2, Dancing Lights, Detect Magic
Lvl 1: Sleep x2, Magic Missile
This is a bad idea if you ask me. [OT digression] This reminds me of the 1st-level Hennet's progression in the PHB. Did he not take Mage Armor? What happens if enemies attack him from both ways, and the fighter can't save his behind?
Besides, Magic Missile is useless until 3rd-level (IME) and Sleep is less useful than Color Spray, especially for a sorcerer. [/Digression]
If you ask me, he should trade a Sleep spell for somthing else.
So, if his party runs into a tough combat with creatures that have good will saves, he casts his one magic missile spell and then his options are:
1. Cower and fire his crossbow inefectually--contributing very little to a combat that looks like it could end in death for all the PCs.
2. Cast will save spells at anything that isn't immune to them and hope that the DM rolls a 5 or below on the saves.
This is a 1st-level wizard. It's a serious bug of 3e (and 2e) that 1st-level wizards are
very weak. It wouldn't matter how many spells the sorcerer knows ... with only three or so spells per day he is going to run out anyway.
When he hits 9th level, he'll have a little more versatility but not much. He'll have a few magic missiles, a blindness, and a Resilient Sphere. His intelligence is only 19 (pity the iconic spread wizard limited to a +2 headband at 9th level) so he only has two 5th level spells.
I feel your pain, too. I have an 8th-level wizard with very few spell slots.
He chose dominate Person twice (not unreasonable--it is his biggest gun).
I think this
is a bad idea. This is just my XP, but my wizard (a 8th-level gnome) has Spell Focus (Conjuration) and Spell Focus (Necromancy). My only
big gun is
fear and I only prepare it once per day. (I also have Dimension Door and Greater Invisibility.)
As you can see, I've focused somewhat (overly?) on defense. If I hadn't done so, I would trade out Dimension Door for Otiluke's Resilient Sphere. I would definitely
not prepare
fear twice.
Fear is also more useful than
dominate person because it works on nearly any creature I run into that has a mind, whereas Dominate Person won't even work on a tiefling!
There are many way to keep out
fear including
remove fear but
protection from good is a more likely spell to be known/prepared by an opponent, since it has uses other than preventing mind control. In other words, I picked a spell with worse defenses against it

that is also more useful than Dominate Person
Let's say this wizard runs into a terrifying group of foes with good will saves. He can contribute his magic missiles but he doesn't have an infinite number--and while helpful, 5d4+5 damage isn't a huge effect on combat. He can try blinding one. However, it's a low low level spell (with a DC 5 points lower than his Dominate Person DC), so even if he knows the critter has a weak fort save, he might have just as good a shot at success with Dominate Person. He could also try using the Resilient Sphere but plenty of creatures have two good saves (and lots are too large for the sphere to work too).
He should have used Web
Even thought the Enchanter prepared a variety of spells, he will still often end up casting spells at creatures' favored saves. The same is true of evokers, necromancers, illusionists, and other specialists. Unless they really split their feats and have multiple GSFs (and prepare a 50/50 split of spells), they'll spend a lot of time casting spells at strong saves.
They could still take multiple Spell Focus and not take Greater Spell Focus. It's never a good idea to put all your eggs in one basket (see the 3.0 ranger's favored enemy). The sample wizard has put his eggs in very few baskets. Instead of taking Greater Spell Focus, he should have taken another Spell Focus instead.
Spontaneous casters like sorcerors can avoid that somewhat but with very few feats to work with, they have trouble mustering the 4 feats necessary to have GSF in even two schools (a human sorceror could pull it off by lvl 6 but he'd have no other feats). Sorcerors are also very limited by their spells known. An enchantment focussed 10th level sorceror might know Charm Monster, Confusion, Hold Person, and Dominate Person--if he did, any other spells he knew would be 3rd level or lower. Thus he's in the same position as the wizard when faced with a strong will save monster. All of his non-will save spells have DCs at least 4 points lower than his Dominate Person spell so in a lot of cases, he might as well just cast Dominate. At least it could end combat if it works. (The same can't be said of his Scorching Ray).
[/B]
First of all ... that's a bad idea again. Just because a sorcerer take Spell Focus doesn't mean he should take so many Enchantment spells.
[OT digression] Charm Monster is not a combat spell, Dominate Person is nearly useless due to the target restrictions, and Hold Person is useless for the same reason.
Confusion and Hold Monster are the good ones. [/OT digression]
Indeed, I can't picture a wizard or sorcerer taking Spell Focus (Enchantment) until 9th-level. Of course, that's just my XP.
To make matters worse, he has hosed himself if he faces opponents with high Will saves. Even if he doesn't have Spell Focus (Necromancy) he will still find his Blindness/Deafness spell more useful against a high-Will save opponent than Confusion. At least this is my XP ... at low levels the saving throw spread isn't as great and depends more on stats than on levels.
PS if you ask me, if your DM doesn't change Spell Focus and ban Greater Spell Focus, you should wait until the higher levels to take Greater Spell Focus. I can't picture what a sorcerer is doing
trying to take GSF twice at 9th-level. He doesn't have the feat slots, he knows he doesn't have the feat slots ... he should try another tactic.