User blog comment:JmLyan/Jace, the Mind Sculptor/@comment-3974211-20130408163140/@comment-7481207-20130408184902

Thanks for the comment. I agree that mana draining is can be seen as unfun, but it can also be counter-played like any other mechanic. Though I think I'll nerf it to only deal flat mana damage. As for the passive, leaving it at mana makes it synergize nicely with clarity and mana pots. I'll fix the thing about building too much mana so that your allies' spells are basically free by either preventing mana gain from items or halving it.