Talk:Vel'Koz/@comment-24197434-20140426051756/@comment-1330314-20140501210139

When you open the options, the first thing you'll see is a big panel in the middle of the screen allowing you to toggle quick-cast on your abilities, which allows you to quick cast your spells with QWER instead of using the slightly more complicated keyboard shortcuts.

I would recommend putting at least Q and W on quick cast, as Vel'Koz needs to output his spells as fast as possible. E is a bit trickier, and if you're not comfortable with quick-casting it you can leave it on normal cast.