Couple things.
1. Although we have a lesser fantasy attribute here on the site, things like warping space and using elemental projectiles surpasses the level of fantasy we allow. If you are unsure how to gauge this I would suggest taking a look at other techniques which have been approved to get a feel for the amount of realism we try to maintain.
2. Your effect description was rather confusing, I couldn't get a grasp on what you were really trying to describe. My suggestion for you would be to keep things relatively simple and focus on creative yet ingenious ideas for the sake of the limited fantasy action.
With that I respectfully deny the technique. You are free to rework it or go with another idea, just make sure you add a reply with your new submission and don't edit your original post with new material as this makes things easier for us.