I started to do a comparison with Magic of Faerun, but noticed that the majority of the spells have changed. So, I'm not going to go through the entire book. However, I will list those that I saw:
Acid Storm went from Evocation to Conjuration and lost its Spell Resistance.
Amanueness went from level 3 to level 0.
Amplify went from one round per level to one minute per level and its radius increased from 15 to 20.
Aura Against Flame became available to all Clerics and to Druids.
Aura of Glory went from one minute per level to instantaneous.
Backlash went from permanent or until discharged, to 10 minutes per level or until discharged.
Ball Lightning went from Reflex Half to Reflex Negates and the mechanics have changed.
Battering Ram increased the Strength of the force.
Ironguts changed from +4 to +5 and is now also castable by Bards and Clerics. The save also changed from circumstance to alchemical.
Someone at WotC was having a field day with these.
