Well there are two spells that give +20 on some skills, but that's only per caster level. Ears of the Wolf and Eyes of the Hawk. Mass true strike, despite it's possible missuse by some, is really QUITE balanced for a 6th level spell. Especially since it only lasts one round and thus being instanteous, can't be extended. Enhanced senses is kind of powerful for a 4th level spell cleric wiz/sorc spell - 3rd level druid/ranger. But nothing extremely so.
Essential Blade is pretty terrifying in that it can allow a melee OR natural weapon to ignore object hardness, damage incorporal creatures (without a miss chance!), and all attacks are made a touch attacks. But it's a 5th level spell for clerics, druids, sor/wiz and 4th for bards.
I've also found two minor errors regardings spells. In Div and Def, there are two Vangal named spells, that both cleric and destruction spells. However both are not listed as such in the Destruction domain. It could very well be that they just wanted them as cleric spells but hard to say. The other error is Chern's Exhalation. It lists "Pestilence" as a domain in the spell description. Last I checked, there WAS no pestilence domain in the Scarred Lands.