Also Lucian, Mana Wave is more like the 'Wave' spells from Runescape. 

Like this for instance (only it moves faster and in more of a straight line rather than an upward arc)

[img=http://images.wikia.com/runescape/images/archive/0/0d/20100624201555!Water_wave.gif]

Only without the big explosion since it (and you) are still somewhat low level.