Incinerate and mouse controls?

[[:-:]]

I saw that incinerate (flamethrower on sorceress) is kinda bad skill, so I decided to make a build around it just to get some challenge. And the 1st thing I get is that it's pretty much locked to WASD, since there's no way to keep it running while moving with mouse. Maybe devs can figure something out? I know it's better to post on official forums, but I'm lazy.