User blog comment:H2o Spira/Flum, Sorceress of Reflections/@comment-4834593-20121009153629

This is a really good idea. Maybe not have the Q mana cost increase that fast though. Something like 5 per level is better, I think, as 70 mana with a manapool of like 1000 means you can cast 14 of them and then you're out of mana. That means 28 seconds. About the cooldown, btw, you also got cooldowns like 3.5 and 2.5 seconds. I think it's better to use those.