quote: I would have to agree with Zarhrezz on this one. My enchantress is level 79 right now, does about 5K fire damage per hit, with like 19 points in telekinesis, 1 in energy shield. I'll be putting a decent number of points into energy shield after TK is maxed, and I have to say, energy shield is already an amazing tank. I have about 50 resist all in hell, with some decent cold and fire absorb, and the ONLY monsters that ever "****" my mana ball are mana burns. Nothing else even puts much of a dent in it, not even those scarab beetles that constantly hit you with charged bolts when attacked.
with only 1 point in ES, you are only going to get 20% of damage to mana, even if it is elemental. This means that a 1k damage will remove 200 mana (roughly 16 TK), nothing at your level! however you will still lose 800 health.
if you put a lot of points in ES, and +skills, then as buckman said it would "****" your energy ball, but not buggy, just normal damage. it is wrong to say it is bugged, it doesnt do extra damage, just it doesnt do reduced damage, so is on par with magic and physical damage.
however you say energy shield is all or nothing, i disagree. it is true that the way you are using it that it effectively adds 20% to your health, especially if you only use enchant, so no mana drain. im sure that if i think about it however, there is probably a nice sweet spot in the middle of energy shield that could work well with damage to mana. say level 7, then add 100% damage to mana, you will lose no mana when hit, and will take half normal damage. this would probably work better with a high health, moderate mana build like yours. this would also remove the danger of mana burn i think.