Feature: Necromantic conduit as an active skill, visual effects

Necromantic conduit = very cool theme.

It would be cool if Necromantic Conduit were an active skill instead of a passive damage bonus, or one that could be toggled, and the greater the risk you take, the greater the reward, e.g. Dota 2 Armlet of Mordiggian.

More control over character = your decisions matter more = more impactful/feedback.

It would also be cool if there was some kind of visual/audio feedback aside from a simple buff icon, e.g. a purple coloured arcane cloak (POE 1).