Possible new spell idea for wizard 101

My all time favorite spell is Blade Barrier from AD&D. This was a cleric spell, which worked like this, the cleric would cast it and be surrounded by a number of swordblades which would damage any enemy which came into the radius. Every time an enemy was damaged in this way 1 of the blades would vanish. This would continue till the blades were used up or the spell duration expired.Think about it you cast a blade barrier then, cast some other damage spell and voila the mob is defeated. I think this is where Blizzard got their idea for the paladin thorns aura in Diablo 2. So this what I would like to see in game, some sort of blade barrier. So until next time, Remember Ice is your Friend