It absorbs my spell 50% of the time and gives me ALOT of magicka in return, its very annoying when trying to get some death dealing zombie off my back.
I REALLY feel like I cheated the game for using it, but I heard you can enchant items to the point where destruction spells cost very little. And I really need the magic defense.
As for completely absorbing spells, I'm not sure.
That's weird, so does it completely absorb 50% of spells, or absorb 50% of all spells typically?
Either way that sounds like a bug to me.
Btw, does it reduce damage for incoming spells or just regen magicka?