User blog comment:Herzog de Puce/Baeny, the Mana Engineer/@comment-24558666-20140629235250

Q and W are too similar, with Q being completely useless version of W as one-time on-hit effect.

E heal is too weak(for cost of 25% current mana), especialy when you have full mana. Its ok to have it scale bit, but 25% mana is way too high.

And cost of shield, that is weaker than heal of Lulu's ult... to be 12% max mana per second... you must really hate your own champ, right?