I don't feel like installing Torment just to get one BAM, and I've never done any modding for that game, but with all the differences it should still work basically the same. I hope, anyway. Remember Morte's Taunt ability? Well, there is a very obscure spell from the Dragon Magazine called Taunt, and it does the same thing, forces a creature to chase after you. This should be easy to code and useful for the BG series and IWD, but what visual effect to use? Morte's #@$! naturally comes to mind. Without his voice, of course.
If anyone wants to share that, you'll get an honorable mention in my spell mod.