@b_ray
Sure, however I'll probably make it in vJASS, see the end of this post. You should also post the description and name if you want it more accurate.
@sidove
Because you can't reliably get the Z of a unit, making your spell pointless unless you want to enable any 1000-range jumps. Others say it works for them, if you want me to try it again, I'll do it and see if it works, just post a reply.
Also, update, all spells are now going to be made in vJASS.
Ghan has said he has fixed this. Monovertex please confirm this fix. This was only a problem with people that had signatures in the upper levels like not the special members but the respected members.