A Challenge in spell writing

Hello,

So I'm taking on a challenge and trying to create a particular spell. But there are certain things about DLTCEP that I am unfamiliar with. The spell I want to make is an area effect spell that works similar to skull trap, glyph of warding and that stuff. I want to use the BAM file SPCHROMI as the visual basis of the spell. What I want the spell to do is for the globe to fly to the designated place of casting and then hover there, where it will dominate the minds of enemies within its area of effect who don't make a saving throw or are resistant to magic. so.... a rather big task for me. Who wants to take on a spell writing challenge with me?