Gods do not have a monopoly on the energy generated by the faith of sentiant beings. Many 'Holy' or unholy relics come into being not from the direct intervention of the divine, but through the sincere belief of the masses. If enough followers can be convinced of the power of an item, then this faith will help make this a self-fufilling prophesy. Obviously this type of energy source is generally beyond the reach of normal PCs', but kings, high preists, and even demons could make use of this to create and power items.
My only concern is the with absolutes - the curse is 100% unremovable, etc. Don't agree with those, but I can easily change that :) However, if the curse was removed, the benefits would go too, possibly causing the adventurers to revert to their true age.
This and a few other posts have me wondering what the speed and endurance of armoured horses are. I like the image this post presents, and the effect of having chariot-loads of dwarves dropped en mass though I can't help but think of this for short-range, shock engagements. Go to Comment
For a futuristic grim gory setting. Probably powered by some kind of dilithium battery or something similarly awesome. Anyways, basicly a big drill sticking up from a hilt that you primarily use for skewering enemies painfully and drilling through armor.