
Father Dale |

Pretty sure thats just a typo.
Witch gets that as a 6th level spell. Globe of Invulnerability is a lvl 6 Wiz/Sorc spell, and there is no 'Greater' version of the spell.
I think its pretty clear that they meant for it to be the regular Globe of Invulnerability, but somebody got confused and named it Greater, because the lvl 4 version is named Lesser.