Well no offense Palaslayer, but the spell is just not that much of a spell...
First, lack interesting eyecandy.
Second, compared to Rmx's, idea isn't that creative
Third, you should've increased the distance between the effects of the spiral as you get closer to the center + the effects used for the spiral are no good...
Fourth, you could've used some minor and smooth terrain deformation
Fifth, I don't know, just let the spell do something more (yet keeping it balanced)
I'm not saying it's a bad spell, but compared to Rmx's... well... yeah it is :s