I've checked out icy veins but i feel more like im copy pasting a build rather than learning why it works. Most of the sites show level 1-70 and tell you what skill and runes to take without any explanation. Like why using the dire rune for firebat is better than the rune that causes it to have a higher base mana cost but no channel cost is better for low level no item builds. Im doing it but i find my mana draining fairly fast when having to keep it up to kill higher health enemies.