I really like this, but there's some grapical issues I'd like to see sorted out, if possible. Whenever you enter the AoE for the Necrotic Air effect, the screen has a green filter applied to it (much like the effect for when you get frozen). And there's some oddities with the Rune: Shielding sprite for the shield effect. Sometimes, it gets cut in half with one side visible but the other not. I've personally seen vertical and diagonal splits myself, but I wouldn't be surprised if horizontal splits can occur. Also, when the shield sprite is halved, sometimes the 'shield hit' pink effect shows over the halved area and generally looks odd.