So, I just ran across this spell for the first time, and it occurred to me, wow, that spell is really good. Essence of the Dragon, 2nd level arcane spell, Sorcerer-only, from Races of the Dragon. Unless I'm missing something, and it's very likely that I am (or at least I hope so), the damn spell just grants the subject full BAB, all good saves, Darkvision, and immunity to sleep and paralysis. For 1 minute/level. Technically, it should also grant them d12 HD, but I wouldn't think that would retroactively change the subject's amount of hit points.
Am I missing something or is this spell better in every way than Divine Power?