Resilience

For me, it seems like the only way to win playing as Elves is with a barrage of enchanted arrows (4 of them) combined with the Berserk spell (and also having "Empathy") and "Counterspell," so that various creatures with unbelievable stats and artifacts don't overwhelm you.
I didn't like it; it's wildly unbalanced, but the idea is good. The map could be bigger, and there could be more opportunities for the hero as well.