our spell system is based on spell scripts, which determine what the spell should look like, by placing a number of sprites, which have certain properties, like velocity and direction and such, sorta like a particle controller.
If there was enough of an interest for a few people to want to create some new spell scripts for us then I could release a 'spell tester' program which would allow you to write spell scripts and test them out, and then they could be included in the final game.
If anyone is interested in having a hand in this, voice your support by replying to this post, along with any other questions/comments you might have.