I tried to make a build that incorporated this ability. Maybe I'm just bad at this game but it seems to me as though Crystal Blast is just pretty useless. In PvE it doesn't really do enough damage to warrant being slotted. In PvP it takes forever to travel to your opponent so really only if you aren't paying attention will this hit while the cast time being a liability (all somebody has to do is break line of sight for a split second while you're casting and you're interrupted at any distance, not to mention it's not hard to just walk up and interrupt the cast). I tried running a build focused on launching empowered Crystal Blasts but it just doesn't perform.
Has anyone been able to make a build able to use Crystal Blast effectively?
"Your mistake is you begged for your life, not for mercy. I will show you there are many fates worse than death."
Witch of Evermore
"Death is a privilege that can be denied by it's learned scholars."
Order of the Black Worm