User blog comment:Supafrunk/Mana-Regen Based Champion/@comment-24.190.81.23-20121025042913/@comment-4097756-20121025150358

You do not remove Mana. You steal mana regen. There's a difference. And burning mana wouldn't be useless. The reason why Riot removed mana burn was simple; if mana burn was weak(like it ended up), it's useless, otherwise, it completely shut down a mana user(which is not cool at all).

Also, I'm thinking about something with his passive when your mana is full (which comes in combo with his ultimate).