What ability is this, and what class uses it?

[viion]

I have been looking forward to awesome battles in this game. The 2009 E3 Trailer showed footage that made the game appear a certain way. Having reached level fifteen by just mashing 1 1 1 1 1 1 1 1 1 1 1 1, I grew too bored to go any further. I am very saddened to learn that this spell is not actually in the game, and that there's no incentive for a mage to press any button other than 1.

yo bro you know in that e3 trailer (i think it was that, might of been 2010) it is all cgi/cutscenes and there is a total of 7 seconds of gameplay? lols they were embarrassed with their game from the start.