Take, for example, Cloud Chariot.
Cloud Chariot is a 7th-level Wu Jen [Water] spell that, for 10 minutes (10 minutes, not 10 minutes/level), creates a chariot of clouds that people can ride on that can go as fast as 10 miles a minute. Alright, that's neat, it goes pretty fast, alright. But it can only go 100 miles maximum, and in almost every case a Teleport spell would be better. I mean, there are definitely situations where it could be incredibly useful (such as chasing a fast enemy), but is it really worth being a 7th-level spell? After all, that's the level of Limited Wish and Greater Teleport. 7th-level?
Also, let's look at Rain of Needles.
Rain of Needles is a 2nd-level Wu Jen [Metal] spell that, at maximum, can do 20 points of damage to a SINGLE target, no save. If you cause it to affect two targets, that's 10 points of damage each, four targets get 5 points each, and so on. And that's the MAXIMUM it can do, at 5th-level. It even requires a Ranged Attack roll against each target. Then, look at Hail of Stone- a 1st-level spell that has the same damage cap (5d4), except that it affects everyone in a 5-foot radius, doesn't require an attack roll, and doesn't need a save- so, at maximum, it could do 20 points of damage to FOUR people. True, it has a 5-gp material component as a balancing factor, but it's a FULL LEVEL below Rain of Needles. What gives?
Also, one error I noticed in the Wall of Bones spell is that, according to the spell, a creature can attempt to make a Strength check to break through the wall, with a DC of 15 + 2 per caster level, maximum +10- meaning that you get the maximum effect once you've reached 5th level. Well, it's a 4th-level spell, meaning you can't even cast it until you're 7th level. Is the cap supposed to be higher? Is it supposed to be +1 per level instead of +2 per level?
Oh, and Protection from Charm (Wu Jen 2) doesn't seem useful to me at all. It grants the recipient a resistance bonus of +1 per three caster levels (maximum +5) against any Will save against a Charm of Compulsion spell or effect. That, in and of itself, isn't very good (considering that it's a resistance bonus, which every PC is going to have by the time it's useful, as well as the fact that it only goes to one save). But the worst part? It's only a round/level! So, for a 2nd-level spell, you get a bonus to one save that probably won't stack with what you already have, and the only time you'll be able to cast it is when you know someone's about to cast a Charm or Compulsion spell on you. What the heck?
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Any help would be most appreciated.